# ChatGPT vs KAT-Dev

ChatGPT records 6,048,022,723 monthly visits with +2.2% month-over-month growth and Freemium pricing. KAT-Dev records 0 monthly visits with 0% growth and Free, Open Source pricing.

| Metric | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | [KAT-Dev](https://openaitools.app/tool/kat-dev) |
| :--- | :--- | :--- |
| Website URL | https://chatgpt.com | https://kat-dev.dev |
| Categories | AI Chatbot, AI Assistant, AI Text Generator, AI Writing Assistants | AI Code Assistant, AI Code Generator, Large Language Models (LLMs), Open Source AI Models |
| Pricing Model | Freemium | Free, Open Source |
| Monthly Visits | 6,048,022,723 | 0 |
| MoM Growth Rate | +2.2% | 0% |
| Primary Market | United States | Global |
| Direct Visits | 4,435,694,005 | 0 |
| Review Score | 4.8 | 4.3 |
| Saved Count | 108 | 1 |
| Supported Platforms | Website | Website |

## ChatGPT

ChatGPT has evolved from a single conversational chatbot into OpenAI's comprehensive AI workspace for consumers, software engineers, and enterprises. While legacy directory listings still reference the 2023 'ChatGPT-4' era, the platform in late 2026 runs on OpenAI's tiered reasoning architecture: Free and Go accounts default to GPT-5.6 Luna, Plus subscribers gain GPT-5.6 Sol with configurable Instant, Medium, and High thinking levels, and Pro and Business Premium subscribers unlock GPT-6 Pro, GPT-6 Astra, and GPT-5.6 Sol Pro with context windows reaching up to 400K tokens in reasoning mode.

Beyond text generation, ChatGPT integrates dedicated agentic and multimodal workflows directly into the interface. Users can launch Deep Research to synthesize multi-step cited reports across the live web, collaborate inside Canvas for side-by-side document and code editing, and run autonomous software engineering tasks through ChatGPT Work and Codex—which execute, test, and refactor code across full repositories. Real-time Advanced Voice Mode with live camera and screen sharing, native image generation, and direct connectors for Google Drive, GitHub, SharePoint, and Notion allow teams to query internal knowledge bases without manual file uploads.

In 2026, OpenAI restructured ChatGPT's pricing ladder to span casual users to heavy agentic builders. The $8/month Go tier bridges the gap between Free and the standard $20/month Plus plan, while the expanded Pro lineup ($100, $200, and $500/month) removes the five-hour rolling usage cap in Work and Codex, unlocks Astra Ultrafast on Pro 500, and rebates 100% of the monthly subscription fee in OpenAI API credits. Organizations can deploy ChatGPT Business (formerly Team) starting at $20/seat/month billed annually with SSO, admin governance, and contractual guarantees that company data is never used for model training.

**Pricing & Plans:** Free tier ($0) on GPT-5.6 Luna; ChatGPT Go at $8/mo; ChatGPT Plus at $20/mo; ChatGPT Pro tiers at $100/mo, $200/mo, and $500/mo (with matching monthly API credits); Business Standard at $20/user/mo billed annually ($25/mo monthly) and Business Premium at $100-$125/user/mo.

- **GPT-6 Astra & GPT-5.6 Adaptive Reasoning:** Automatically routes prompts or lets users select between Instant responses and Medium, High, or Extra High thinking depth across GPT-5.6 Luna, GPT-5.6 Sol, and flagship GPT-6 Pro/Astra models.
- **ChatGPT Work & Cloud Codex Agents:** Asynchronous software engineering and task agents that clone repositories, run terminal tests in sandboxed environments, resolve complex bugs, and submit pull requests.
- **Autonomous Deep Research:** Browses dozens of primary web sources, academic papers, and connected workspace documents over several minutes to compile structured, citation-backed analytical reports.
- **Interactive Canvas & Multimodal Voice:** Provides a split-screen editor for inline prose and code revisions alongside low-latency voice conversations with live screen and camera grounding.
- **Pro API Credit Rebate & Workspace Connectors:** Every Pro tier ($100, $200, $500/mo) includes its full subscription value in monthly OpenAI API credits, plus native integrations with GitHub, Google Drive, and Microsoft 365.

**Strengths:** Full monthly fee rebated as usable OpenAI API credits across all three Pro tiers ($100, $200, and $500/mo); Removes the 5-hour rolling usage cap in ChatGPT Work and Codex on Pro plans for uninterrupted agentic coding; Budget-friendly $8/mo ChatGPT Go plan makes expanded memory and higher daily message caps accessible below Plus; Industry-leading multimodal ecosystem combining Deep Research, Canvas, Advanced Voice, and native image generation

**Limitations:** Plus ($20/mo) enforces 5-hour rolling message caps in Work and Codex and excludes GPT-6 Pro in standard chat; A five-tier consumer pricing ladder (Free, Go, Plus, and three separate Pro tiers) makes choosing the right allowance confusing; Instant context window on lower tiers (54K on Plus vs 128K on Pro) is smaller than Google Gemini's 1M-token standard window

[Profile (Markdown)](https://openaitools.app/tool/chatgpt-4.md)

## KAT-Dev

KAT-Dev is an open-weight large language model created by Kwaipilot and aimed at coding and software engineering workflows. With 33 billion parameters, it is designed to help developers generate code, fix bugs, refactor existing logic, write tests and produce documentation. The model is published openly, so engineering teams can pull the weights and run them in their own infrastructure or rely on third-party inference providers that already serve it.

What sets KAT-Dev apart is its focus on repository-scale coding assistance rather than generic chat. It supports tool-calling and a structured prompt format that lets it interact with a computer or coding agent to complete multi-step tasks, which makes it suitable for agentic developer tooling and automated software tasks. The model is tagged as multilingual and conversational on its distribution page.

Because KAT-Dev is licensed under Apache-2.0, it can be embedded into commercial products and internal tools. Developers typically evaluate it against established coding benchmarks and integrate it through transformers-based pipelines or an API endpoint. Note that kat-dev.dev occasionally blocks automated crawlers; the project itself remains available through its public model repositories.

**Pricing & Plans:** KAT-Dev is released as open weights under the Apache-2.0 license, so the model itself is free to download and self-host. Costs apply only to the compute you use (your own GPUs or a paid third-party inference provider).

- **33B open-weight coding model:** A 33-billion-parameter language model released with open weights for self-hosting and customization.
- **Software-engineering focus:** Optimized for code generation, bug fixing, refactoring, performance optimization, test generation and code documentation.
- **Agentic tool calling:** Supports a structured tool-call format so it can operate inside coding agents and complete multi-step tasks.
- **Apache-2.0 license:** Permissive licensing allows commercial and internal use, fine-tuning and redistribution.
- **Inference-provider ready:** Available through mainstream inference providers and transformers-compatible pipelines for quick adoption.

**Strengths:** Open weights under a permissive Apache-2.0 license; Strong coding and repository-level reasoning focus; Self-hostable for data-sensitive engineering teams; Available through public inference providers for quick testing

**Limitations:** 33B parameters need meaningful GPU resources to self-host; Not a managed SaaS product with an official hosted dashboard; Requires benchmark evaluation and tuning to fit specific codebases

[Profile (Markdown)](https://openaitools.app/tool/kat-dev.md)

## Frequently Asked Questions

### How do ChatGPT and KAT-Dev compare in monthly traffic?

ChatGPT has 6,048,022,723 monthly visits, while KAT-Dev has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ChatGPT has a month-over-month growth rate of +2.2%; KAT-Dev has 0%.

### How does pricing compare?

ChatGPT: Freemium. Free tier ($0) on GPT-5.6 Luna; ChatGPT Go at $8/mo; ChatGPT Plus at $20/mo; ChatGPT Pro tiers at $100/mo, $200/mo, and $500/mo (with matching monthly API credits); Business Standard at $20/user/mo billed annually ($25/mo monthly) and Business Premium at $100-$125/user/mo. KAT-Dev: Free, Open Source. KAT-Dev is released as open weights under the Apache-2.0 license, so the model itself is free to download and self-host. Costs apply only to the compute you use (your own GPUs or a paid third-party inference provider).

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Google Gemini](https://openaitools.app/tool/gemini-gemini-advanced) | 2,637,398,242 | -0.1% | Freemium | Provides massive context windows and deep Google Workspace integration, but trails behind in advanced coding workflows. | [.md](https://openaitools.app/tool/gemini-gemini-advanced.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Offers superior long-form writing and coding assistance with interactive artifacts, but lacks built-in deep web search. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs. | [.md](https://openaitools.app/tool/deepseek.md) |
| 4 | [Grok](https://openaitools.app/tool/grok) | 203,846,050 | -0.8% | Freemium | Integrates real-time social media data and image generation directly into chat, but has fewer enterprise integrations. | [.md](https://openaitools.app/tool/grok.md) |
| 5 | [Notion](https://openaitools.app/tool/t) | 173,441,670 | +0.1% | Freemium | The AI workspace where teams and agents get work done together | [.md](https://openaitools.app/tool/t.md) |
| 6 | [Perplexity](https://openaitools.app/tool/perplexity-ai) | 88,310,223 | -3.7% | Freemium | Excels at real-time web research with verifiable inline citations, but offers less robust general conversational coding features. | [.md](https://openaitools.app/tool/perplexity-ai.md) |
| 7 | [Meta AI](https://openaitools.app/tool/meta-ai) | 43,935,687 | +27.7% | Free | Provides a completely free conversational assistant across social apps, but lacks advanced coding agents and deep research. | [.md](https://openaitools.app/tool/meta-ai.md) |
| 8 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Alibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context. | [.md](https://openaitools.app/tool/qwen-4.md) |
| 9 | [Cursor](https://openaitools.app/tool/cursor) | 23,297,751 | +8.4% | Freemium | The AI coding agent for building ambitious software | [.md](https://openaitools.app/tool/cursor.md) |
| 10 | [Kimi AI](https://openaitools.app/tool/kimi-chat) | 19,632,261 | -23.4% | Free | Specializes in processing exceptionally long documents for deep research, but lacks multi-modal voice and advanced code execution. | [.md](https://openaitools.app/tool/kimi-chat.md) |

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Source: https://openaitools.app/compare/chatgpt-4-vs-kat-dev

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)