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Chatbot UI

by Chatbotui

Chatbots & LLMs
Visit Chatbot UI →Free tierFree

Overview

An open source ChatGPT UI. .

Chatbot UI in depth

Chatbot UI, built by Chatbotui, sits in the chatbots & llms space and is completely free to use.

Chatbot UI is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.

Speed
—
Context window
—
Free tier
Yes
Updated
2026-07-01

Key features

    Pricing

    Free
    Free tier available
    Free tierFree
    See full API pricing → llmprice.app

    Pros

      Cons

        Who should use Chatbot UI

        • →Anyone looking for a chatbots & llms tool from Chatbotui.
        • →Teams and individuals focused on research and writing.
        • →Users who want to try before they buy — there's a free tier.

        Who should look elsewhere

        • →Users whose needs fall well outside chatbots & llms — a more specialised tool may fit better.

        Best for

        ResearchWriting

        10 Best Chatbot UI Alternatives in 2026

        Chatbot UI is a strong chatbots & llms tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to Chatbot UI, ranked and compared.

        1
        ClaudeFree tier$20/mo

        Anthropic

        Claude is Anthropic's family of AI assistants, known for long-context reasoning, careful writing and strong coding…

        + Best-in-class long-document reasoning+ Natural, high-quality writing+ Strong safety and reliability
        Read full Claude review →
        2
        ChatGPTFree tier$20/mo

        OpenAI

        ChatGPT is OpenAI's flagship conversational AI, powering hundreds of millions of weekly users across web, mobile and…

        + Most polished and widely supported ecosystem+ Excellent general reasoning and coding+ Huge third-party integration support
        Read full ChatGPT review →
        3
        GeminiFree tier$20/mo

        Google DeepMind

        Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel…

        + Massive context window+ Tight integration with Google ecosystem+ Generous free access
        Read full Gemini review →
        4
        MoonshotAI: Kimi K3Paid$3.00/1M tokens

        Moonshot AI

        Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI.

        + Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full MoonshotAI: Kimi K3 review →
        5
        Meta: Muse Spark 1.1Paid$1.25/1M tokens

        Meta

        Muse Spark 1.1 is a multimodal reasoning model from Meta, built for agentic tasks.

        + Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full Meta: Muse Spark 1.1 review →
        6
        OpenAI: GPT-5.6 Luna ProPaid$1.00/1M tokens

        OpenAI

        GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with…

        + Large 1,050,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full OpenAI: GPT-5.6 Luna Pro review →
        7
        OpenAI: GPT-5.6 LunaPaid$1.00/1M tokens

        OpenAI

        GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume…

        + Large 1,050,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full OpenAI: GPT-5.6 Luna review →
        8
        OpenAI: GPT-5.6 Terra ProPaid$2.50/1M tokens

        OpenAI

        GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served…

        + Large 1,050,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full OpenAI: GPT-5.6 Terra Pro review →
        9
        OpenAI: GPT-5.6 TerraPaid$2.50/1M tokens

        OpenAI

        GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the…

        + Large 1,050,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full OpenAI: GPT-5.6 Terra review →
        10
        OpenAI: GPT-5.6 Sol ProPaid$5.00/1M tokens

        OpenAI

        GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with…

        + Large 1,050,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
        Read full OpenAI: GPT-5.6 Sol Pro review →

        Chatbot UI vs top alternatives

        A side-by-side look at how Chatbot UI stacks up against its closest rivals.

        FeatureChatbot UIChatbotuiClaudeAnthropicChatGPTOpenAIGeminiGoogle DeepMind
        Quality score— / 109.6 / 109.5 / 109.2 / 10
        Starting priceFree$20/mo$20/mo$20/mo
        Free tierYes — Free tier availableYes — Free tier availableYes — Free tier availableYes — Free tier available
        API input price—$2 / 1M tokens$1 / 1M tokens$1.5 / 1M tokens
        API output price—$10 / 1M tokens$6 / 1M tokens$9 / 1M tokens
        Speed—FastFastFast
        Context window—200K tokens128K tokens1M-2M tokens
        CategoriesChatbots & LLMsChatbots & LLMs, Coding, WritingChatbots & LLMs, Coding, WritingChatbots & LLMs, Coding, Writing
        Key features
          • Industry-leading long context (200K+ tokens)
          • Artifacts for live previews
          • Strong agentic coding (Claude Code)
          • Vision and document analysis
          • Multimodal text, image and voice input
          • Advanced data analysis (code interpreter)
          • Custom GPTs and GPT Store
          • Web browsing and real-time search
          • Up to 2M token context window
          • Deep Google Workspace integration
          • Native video and audio understanding
          • Real-time Google Search grounding
          Pros
            • + Best-in-class long-document reasoning
            • + Natural, high-quality writing
            • + Strong safety and reliability
            • + Most polished and widely supported ecosystem
            • + Excellent general reasoning and coding
            • + Huge third-party integration support
            • + Massive context window
            • + Tight integration with Google ecosystem
            • + Generous free access
            Cons
              • − No native image generation
              • − Fewer consumer integrations than ChatGPT
              • − Usage caps on the most capable models
              • − Can be verbose and overly cautious
              • − Quality can be inconsistent on edge cases
              • − Privacy concerns for some users

              Frequently asked questions

              Q. Is Chatbot UI free?

              Yes — Chatbot UI offers a free tier. Paid plans start at Free.

              Q. How much does Chatbot UI cost?

              Chatbot UI starts at Free. Pricing and features change often, so confirm current rates on the official site.

              Q. What is Chatbot UI best for?

              Chatbot UI is best suited to research and writing, within the chatbots & llms category.

              Q. What are the best Chatbot UI alternatives?

              Popular alternatives to Chatbot UI include Claude, ChatGPT, Gemini and MoonshotAI: Kimi K3. Each trades off price, quality and ecosystem differently.

              Q. Is there a free alternative to Chatbot UI?

              Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.

              Q. Why switch from Chatbot UI?

              Common reasons include pricing, specific feature gaps, data-privacy requirements, or simply wanting a tool that fits your stack better.

              How we rate AI tools

              Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.

              Ready to try Chatbot UI?

              Start with the free tier and upgrade as you grow.

              Visit Chatbot UI →