AI Agent Comparison 2026: Manus, Genspark, OpenAI Operator, Dify and 6 More (Pricing & Free Plans)

Even if you are considering adopting an AI agent, choosing the right tool from among many options can be difficult. This is because there are many points to compare, such as whether pricing is monthly or usage-based, whether a free plan is available, and whether Japanese support is offered.

In this article, we compare 10 major tools, including Manus and Genspark Super Agent. Based on AIpedia data (as of November 2026), we have organized each tool's pricing, free plan availability, Japanese support, and platforms. We also explain the specific strengths and weaknesses of each.

In the second half, we summarize recommended tools by goal, key points on how to choose, and an FAQ.

What Is an AI Agent? Capabilities and Key Considerations Before Choosing

An AI agent is an AI technology that autonomously executes complex tasks, such as web searches, data analysis, and file creation, based on human instructions. For example, Manus performs browser operations and code execution using only natural language commands, while Genspark Super Agent automatically completes the entire process from web search to report generation. Additionally, OpenAI Operator handles online procedures like reservations and purchases, and tools like Dify and LangChain allow you to build custom agents tailored to internal business processes.

• Autonomous Web Browser Operation: Automatically executes site browsing, form filling, and reservation procedures.
• Data Collection and Analysis: Gathers information from multiple sources and creates tables and graphs for visualization.
• Document and Report Creation: Generates structured reports and presentation materials summarizing research findings.
• Code Execution and Processing: Executes code such as Python to perform statistical data processing and file management.
• Business Workflow Automation: Continuously executes specific business procedures, such as sales or customer service tasks.

When selecting a tool, it is important to check the scope of the free plan and the cost structure. For example, Genspark Super Agent is available for free, but Manus varies credit consumption based on task complexity, making it difficult to estimate costs in advance. Also note that some tools, such as Copilot Agents and Agentforce, require existing contracts with Microsoft 365 or Salesforce.

Japanese support is also a critical point when selecting a tool. Genspark Super Agent, Dify, and Copilot Agents support Japanese. However, according to AIpedia data, Browser Use (a Python library) and Relevance AI (UI in English only) do not support Japanese. Furthermore, there are significant differences in available environments and security requirements between individual-focused tools specialized for web browser operations and business-focused tools integrated with enterprise systems.

For the final decision on adoption, carefully consider compatibility with your company's IT environment and business workflows. We recommend checking the official website for the latest information on detailed features and current pricing structures for each tool.

Comparison of Top 10 Tools (Pricing, Japanese Support, Platforms)

Tool	AIpedia rating	Main plans	Japanese support	Platforms
Manus	4.3	Free (300 credits/day) / Starter $39/month (3,900 credits) / Pro $199/month (19,900 credits)	Partial support (Japanese prompts possible)	Web
Genspark Super Agent	4.1	Free	Supported	Web, iOS, Android
OpenAI Operator	4.3	Included in ChatGPT Pro $200/month / Partially available with Plus $20/month / API usage billed separately	Partial support	Web
Dify	4.3	Sandbox Free (200 requests/day) / Professional $59/month / Team $159/month	Supported	Web, Self-hosted (Docker), API
Copilot Agents	4.2	Basic features included in Microsoft 365 Copilot $30/user/month / Copilot Studio agents additional usage-based billing (per message) / Enterprise (contact sales)	Supported	Web, Microsoft 365, Teams
Agentforce	4.3	Agentforce $2/conversation (usage-based) / Used as an add-on to each Salesforce Edition / Volume discounts available for Enterprise	Supported	Web, Salesforce Platform
LangChain	4.3	Open source Free / LangSmith Developer Free / Plus $39/month	Partial support	Python, JavaScript/TypeScript, Self-hosted
CrewAI	4.2	Open source (Free) / CrewAI Enterprise Free / Business $299/month	Partial support (UI is in English)	Python, Web (Enterprise)
Browser Use	4.4	Open source (Free, MIT License) / Cloud version usage-based billing	Not supported	Web
Relevance AI	4	Free (100 credits/day) / Pro $19/month / Team $199/month	Not supported (UI is English only)	Web, API

Ratings are out of 5 points by the AIpedia editorial team. Pricing and plans may change. Please check the official website of each tool for the latest information before signing a contract.

Features, Pricing, and Best Use Cases for 10 Tools

1. Manus

Manus is a general-purpose AI agent platform where multiple AI agents collaborate to autonomously execute complex tasks. Users simply provide instructions in natural language, and the entire process—from planning to execution and verification—is handled in the background. A key feature is its integration of diverse functions, including browser operations, code execution, and data analysis.

• Strengths: It excels at streamlining research tasks that span multiple steps, such as market research and competitive analysis. Reports indicate it can complete work that typically takes humans hours in a much shorter time.
• Strengths: You receive a notification upon task completion, allowing you to work on other tasks in parallel. It also includes code execution environments for Python and Node.js.
• Strengths: It automatically selects among multiple high-performance LLMs, such as Claude and Qwen, based on the task. You can also monitor the execution plan and progress on the screen.
• Things to note: The credit-based pricing model means consumption varies with task complexity. As a result, it may be difficult to estimate costs accurately in advance.
• Things to note: Creative planning or writing that requires subtle nuance often still requires human intervention.

Pricing: Free (300 credits/day) / Starter $39/month (3,900 credits) / Pro $199/month (19,900 credits). The free plan grants 1,000 credits upon new registration, allowing you to test the experience first.

Best for: Individuals who want to automate research or data analysis tasks that can be standardized, and those looking to reduce the hassle of switching between multiple tools. However, instructions in Japanese may be slightly less precise than in English. For important tasks, it is recommended to write instructions specifically and clearly.

View detailed features, pricing, and FAQ for Manus

2. Genspark Super Agent

Genspark Super Agent is an autonomous agent that integrates AI search and task execution. It goes beyond simple question-answering to automatically complete complex research tasks such as web searches, data collection, and comparative analysis. Results are output as structured reports using Sparkpages, its proprietary content format.

• Strengths: Its ability to autonomously execute multi-step, complex research is a key feature.
• Strengths: It integrates web search, data collection, and analysis to create easy-to-understand reports via Sparkpages.
• Strengths: It is free to use and supports Japanese.
• Things to note: Tasks may take time to complete.
• Things to note: The accuracy of responses requires human verification, and information may be lacking for niche topics.

Pricing: Free

Best for: Ideal for those who want to streamline research tasks involving multiple steps, such as travel planning or market research. It suits business professionals and individual users seeking high-level analytical reports for free.

3. OpenAI Operator

OpenAI Operator is an AI web browsing agent developed by OpenAI. With just natural language instructions, it autonomously operates websites to automatically complete complex tasks like making reservations or purchases. A key feature is that it does not require API integration, meaning it can effectively support virtually any web service. Note that since July 2025, Operator’s capabilities have been available inside ChatGPT as its agent feature. Since the delivery format has changed, please check the official website for the latest status.

• Strengths: It recognizes screenshots visually and performs clicks and inputs, allowing it to operate existing websites as they are.
• Strengths: In scenarios requiring password or credit card information entry, the design safely hands over control to the user.
• Things to note: Operation errors may occur on complex websites, making it unsuitable for tasks that require real-time performance.
• Things to note: Support for Japanese sites is still developing, and using all features requires subscribing to a high-priced plan.

Pricing: Included in ChatGPT Pro $200/month / Partially available with Plus $20/month / API usage is billed separately. Please check the official website for the latest pricing and features.

Best for: Individuals who want to automate daily routine tasks to save time and effort. It is also suitable for businesses looking to build custom workflows to improve operational efficiency.

4. Dify

Dify is an open-source AI agent building platform. You can visually design applications and workflows leveraging LLMs using no-code or low-code approaches. It offers both self-hosted and cloud versions, with the ability to choose how data is managed being a key feature.

• Strengths: Supports numerous model providers such as OpenAI and Anthropic, allowing free switching based on use case.
• Strengths: Lets you build a custom AI grounded in your internal documents with RAG.
• Strengths: Intuitively design chatbots and business automation with a visual workflow builder. Created apps can be connected to external systems via API or Webhook.
• Things to note: In the case of self-hosting, you must manage and operate the infrastructure yourself.
• Things to note: Advanced customization may require programming knowledge. Japanese documentation and community are still considered developing.

Pricing: Sandbox free (200 requests/day) / Professional $59/month / Team $159/month / Enterprise (contact sales) / Self-hosted Free (Open source)

Best for: Individuals who want to minimize programming knowledge but wish to build custom AI using internal documents or business automation workflows. It is also suitable for teams that prioritize data management flexibility and can set up a self-hosted environment.

See detailed features, pricing, and FAQ for Dify

5. Copilot Agents

Copilot Agents is an autonomous AI agent platform provided by Microsoft. You can build agents that autonomously execute business processes by leveraging data from Microsoft 365 and Dynamics 365.

• Strengths: Native integration with Microsoft 365 and Dynamics 365 is a key highlight. Using Copilot Studio, you can build agents without coding, which is also appealing.
• Strengths: Operates on Microsoft's enterprise security foundation, meeting compliance requirements for large enterprises. A rich selection of pre-built templates for specific business areas, such as sales support and customer service, is available.
• Things to note: Usage requires a Microsoft 365 Copilot license ($30/user/month). Additionally, integration with tools outside the Microsoft ecosystem is limited.

Pricing: Basic features included in Microsoft 365 Copilot $30/user/month / Copilot Studio agents: additional usage-based billing (per message) / Enterprise (contact sales)

Best for: Businesses aiming to improve internal operational efficiency or strengthen customer service, based on existing Microsoft products. It is suitable when the IT department has established an operational framework, as advanced customization requires learning Copilot Studio.

6. Agentforce

Agentforce is an enterprise AI agent platform provided by Salesforce. You can build AI agents that autonomously execute tasks in sales, customer service, and other areas. It allows you to create agents tailored to your company’s unique business workflows using low-code or no-code methods.

• Strengths: Native integration with Salesforce CRM enables full utilization of customer data.
• Strengths: Covers a wide range of business areas, including sales, customer service, and marketing.
• Things to note: Requires a Salesforce platform subscription as a prerequisite.
• Things to note: Uses a pay-per-conversation model, so cost management requires attention.

Pricing: Agentforce $2/conversation (pay-as-you-go) / Available as an add-on to each Salesforce Edition / Volume discounts available for Enterprise

Best for: Businesses already using Salesforce that want to advance business automation based on customer data. It is also suitable for teams prioritizing efficiency in customer support or sales processes.

7. LangChain

LangChain is an open-source framework for building AI agents and applications using large language models (LLMs). By chaining individual prompts and tool calls, you can define complex business workflows in code. It has over 130,000 stars on GitHub, characterized by a large user community and abundant information.

• Strengths: Immediate integration with hundreds of external tools, including over 100 LLM providers and 50+ vector databases. This enables efficient development of Retrieval-Augmented Generation (RAG) and multi-agent systems.
• Strengths: Supports both Python and JavaScript/TypeScript, making integration with web backends easy. Japanese tutorials and community activity are also active.
• Strengths: LangGraph allows you to structure multi-agent flows involving conditional branching, loops, and human confirmation. LangSmith enables monitoring, evaluation, and debugging of operations (full-featured use starts at Plus $39/month).
• Things to note: A developer-oriented tool requiring programming knowledge. If you prefer no-code operation, other visual builders may be more suitable.
• Things to note: The thick abstraction layer can result in excessive code volume even for simple tasks. Additionally, breaking API changes have occurred between past versions, so attention is needed regarding the freshness of learning resources.

Pricing: Open source Free / LangSmith Developer Free / Plus $39/month / Enterprise (contact sales)

Best for: Developers with Python or JavaScript knowledge who want to build highly customizable AI agents tailored to their needs. It is particularly suitable for implementing complex workflows combining multiple LLMs and external tools, or for enterprise teams looking to utilize monitoring and evaluation features in production environments.

View details on LangChain features, pricing, and FAQ

8. CrewAI

CrewAI is a framework where multiple AI agents collaborate as a team. Each agent is assigned a role, and they work together to execute complex tasks.

• Strengths: You can assign roles, goals, and backstories to each agent—such as “Researcher,” “Writer,” or “Editor”—and have them collaborate as a team.
• Strengths: It integrates with various LLMs from OpenAI, Anthropic, Google, and others. Since it is open source, you can use and extend it freely.
• Strengths: The Enterprise edition includes a no-code UI builder, allowing non-technical users to create workflows.
• Things to note: Using the open-source version requires Python knowledge, and designing multi-agent systems also demands experience in AI utilization.
• Things to note: API costs from multiple LLMs are aggregated, which can lead to higher expenses.

Pricing: Open source (free) / CrewAI Enterprise Free / Business $299/month / Enterprise (contact sales)

Best for: Developers and teams who want to build complex workflows using multiple agents with divided roles. If non-technical users need to build without code, the Enterprise edition is available.

View details on CrewAI features, pricing, and FAQ

9. Browser Use

Browser Use is a Python framework that autonomously operates web browsers using LLMs. It is provided as open source, allowing you to build agents with just a few lines of code. It has gathered over 78,000 stars on GitHub and can be combined with major LLMs like GPT-4o, Claude, and Gemini to automate web scraping, form filling, and web app testing.

• Strengths: The MIT License allows free commercial use with no upfront costs.
• Strengths: It uses a hybrid approach combining DOM parsing and visual recognition to perform stable browser operations based on Playwright. You can also run multiple browsers in parallel.
• Things to note: Python development knowledge is required, and LLM API usage fees are incurred separately.
• Things to note: Accuracy may decrease with complex web apps, and it is difficult to handle bot countermeasures like CAPTCHAs. For large-scale use, there is also Browser Use Cloud with pay-as-you-go pricing.

Pricing: Open source (free, MIT License) / Cloud version is pay-as-you-go

Best for: Developers who want to customize web scraping and form filling automation to fit their company’s environment.

10. Relevance AI

Relevance AI is a platform for building AI agents for sales and marketing using low-code methods. It supports integration with over 9,000 tools and APIs. Multiple agents can collaborate to autonomously execute complex workflows.

• Strengths: It offers a rich library of pre-built sales and marketing agent templates. The technical barrier is low, enabling low-code construction.
• Strengths: Its multi-agent system supports automation of entire business processes. A key feature is that there is no markup on AI model costs.
• Things to note: The UI is English-only and does not support Japanese. Predicting credit consumption can be difficult.

Pricing: Free (100 credits/day) / Pro $19/month / Team $199/month / Business $599/month / Enterprise (contact sales)

Best for: Sales and marketing teams that want to integrate with existing tools. It is suitable for business professionals who want to automate workflows without extensive coding knowledge.

View Relevance AI features, pricing, and FAQ in detail

Recommendations by Goal

Goal	Recommended	Reason
Want to try it for free first	Genspark Super Agent, Manus	Genspark Super Agent is available for free, and Manus offers a free plan with 300 credits per day.
Want to use it with Japanese text	Genspark Super Agent, Dify	Both tools support Japanese, allowing you to use them for prompts and the UI.
Build it yourself as a developer	LangChain, Browser Use	These are open-source frameworks suitable for custom development in Python or JavaScript.
Want to automate team workflows	Copilot Agents, Agentforce	They have enterprise-grade infrastructure and integrate natively with existing business tools.
Want autonomous execution of complex tasks	Manus, Genspark Super Agent	They automatically complete multi-step research or analysis based solely on natural language instructions.
Want to delegate website operations	OpenAI Operator	It performs actions like booking, purchasing, and form filling by watching the screen. It hands off sensitive inputs, such as passwords, to the user.
Use your internal data	Dify, Relevance AI	With RAG capabilities and knowledge base integration, you can build AI that leverages your own documents.

The table above provides general guidelines based on the main features of each tool. Please check the official websites for specific pricing plans and the latest features before implementation.

How to Choose Without Regrets

Check the fit between your use case and cost structure

Pricing models vary significantly by tool. Manus and Relevance AI use a credit system, where consumption fluctuates based on task complexity, making it difficult to estimate costs in advance. In contrast, Agentforce uses usage-based billing per conversation ($2/conversation). Copilot Agents require a per-user fee for Microsoft 365 Copilot, with additional usage-based billing per message for Copilot Studio agents.

Understand Japanese support and platform limitations

Support for Japanese prompts and UI varies by tool. Genspark Super Agent and Dify support Japanese, while Browser Use and Relevance AI do not. Also, platforms may be limited to web only, Python development environments, or specific ecosystems like Microsoft 365. Verify compatibility with your IT environment before implementation.

Assess technical knowledge requirements

Some tools allow no-code construction, while others require programming. Dify and Copilot Agents enable agent building through visual operations, whereas LangChain, CrewAI, and Browser Use assume coding knowledge in Python or similar languages. It is important to choose based on available development resources and your team's technical proficiency.

Verify integration scope with existing business systems

Tools are expected not only to function standalone but also to integrate into existing business workflows. Copilot Agents natively integrate with Microsoft 365 and Teams, while Agentforce deeply integrates with Salesforce CRM. On the other hand, Manus and Genspark Super Agent specialize in general web operations and research. Specifically evaluate the potential for integration with your key business tools.

Evaluate ease of experimentation based on free tier availability

The availability of a free plan to verify features before full deployment is important. Genspark Super Agent is available for free, while Manus and Relevance AI offer free tiers with a set number of credits per day. Options like Dify and LangChain allow self-hosting for free, but LLM API fees and server costs are separate. We recommend using the free tier first to verify suitability for your tasks.

FAQ

Q. Are there any AI agent tools that can be used for free?

Genspark Super Agent is available for free. Additionally, Manus offers a free tier of 300 credits per day, and Dify provides up to 200 free uses per day. Relevance AI also has a free plan with 100 credits per day.

Q. Which tools support Japanese input or output?

Genspark Super Agent, Dify, Copilot Agents, and Agentforce support Japanese. Manus, OpenAI Operator, LangChain, and CrewAI offer partial support. Browser Use and Relevance AI do not support Japanese, or their UI is English-only.

Q. What is the difference between tools for developers and no-code tools?

LangChain, CrewAI, and Browser Use require programming knowledge in languages like Python. On the other hand, Dify, Copilot Agents, Agentforce, and Relevance AI can be built using no-code or low-code methods. Manus and Genspark Super Agent can be used with natural language instructions alone.

Q. Which tool is the most affordable?

Genspark Super Agent is available for free. Among paid plans, Relevance AI Pro costs $19/month, and Manus Starter costs $39/month. The open-source versions of LangChain and Browser Use are also free, but separate LLM API fees apply.

Q. Which tool is best for building a custom AI using internal data?

Dify lets you build a custom AI grounded in your internal documents with its RAG feature. Copilot Agents utilizes data from Microsoft 365 and Dynamics 365. Agentforce can also fully leverage customer data from Salesforce. Please check the official website for the latest pricing and features.

Q. What should I note when delegating tasks to an AI agent?

Because they operate autonomously, it is harder to notice errors. According to AIpedia data, results from Genspark Super Agent require human verification of accuracy, and OpenAI Operator may make operational mistakes on complex sites. For payments or entering personal information, verify if there is a mechanism to hand over control to the user, like in Operator, and have a person do a final check. For credit-based tools, it is safer to start with small tasks while monitoring consumption.

Summary

This article compared 10 AI agent tools, including Manus and Genspark Super Agent. Each tool has different strengths and things to note, such as autonomous task execution or no-code building. Pricing varies widely from free plans to monthly subscriptions, so the best choice depends on your goals and technical constraints.

When considering adoption, prioritize ease of cost management and integration with your existing environment, not just the number of features. Be careful with tools that use usage-based billing or credit systems, as estimating costs in advance can be difficult. Ultimately, it is important to choose the tool that best fits your company's business processes.

• Complex research and report creation: Genspark Super Agent (autonomously executes multi-stage research for free)
• Building internal workflow automation: Dify (open source, self-hostable, high flexibility in data management)
• Browser operation automation: Browser Use (builds browser agents at low cost using open source)

View all AI agent tools (21 items)