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ChatGPT vs Grok Code Fast 1

Which one should you try?

ChatGPT

Freemium

Best for People working with documents and research

Visit ChatGPT See full review

Grok Code Fast 1

Freemium

Best for <cite index="1-4">Agentic coding workflows requiring fast loops of reasoning and tool calls</cite>

Visit Grok Code Fast 1 See full review

Pricing, capabilities and platforms side by side. Prices are as of the "Pricing checked" date in the table.

ChatGPT

ChatGPT

OpenAI's assistant for writing, research, analysis and file creation through Chat, Work and Codex.

Grok Code Fast 1

Grok Code Fast 1

<cite index="2-1">Released in late August 2025, the xAI Grok Code Fast 1 model is a coding-focused AI model that excels at common, high-volume coding task and is designed especially for agentic coding workflows.</cite> <cite index="1-6,1-7,1-8">Built from scratch with a brand-new model architecture, it was trained on a pre-training corpus rich with programming-related content, and curated high-quality datasets that reflect real-world pull requests and coding tasks.</cite> <cite index="1-23">The model is particularly adept at TypeScript, Python, Java, Rust, C++, and Go.</cite> <cite index="1-13">The model is generally available via the xAI API, priced at $0.20 / 1M input tokens, $1.50 / 1M output tokens, and $0.02 / 1M cached input tokens.</cite>

AttributeChatGPTGrok Code Fast 1
PricingFreemiumFreemium
PriceFree; paid plans from US$8/month (Go; regional availability varies)$30/month
Pricing checkedOct 17, 2026Jun 11, 2026
Free trialNot stated0 days
Open sourceNoNo
Has APIYesYes
Self-hosted optionNoNo
PlatformsWeb, desktop, mobile<cite index="30-1">Available through xAI API and integrated with launch partners including GitHub Copilot, Cursor, Cline, Roo Code, Kilo Code, opencode, and Windsurf</cite>
Languages—<cite index="1-23">TypeScript, Python, Java, Rust, C++, and Go</cite>
Released—2025-08-28
Pros
  • Conversation, research and file creation in one product
  • Projects and plugins can add relevant context
  • Free plan available for getting started
  • <cite index="2-25,2-26">Massive throughput of approximately 90-100 tokens per second, delivering dozens of tool calls and edits before you finish reading its initial plan in IDE integrations</cite>
  • <cite index="1-13">Economical pricing at $0.20/1M input tokens and $1.50/1M output tokens</cite>
  • <cite index="2-27,2-28,2-29">Visible reasoning traces that provide real-time, summarized view of its reasoning process, helping developers catch logic errors early</cite>
  • <cite index="1-22">Prompt caching optimizations regularly achieving cache hit rates above 90% when used with launch partners</cite>
Cons
  • Tool and model access varies by account and platform
  • Work and Codex share usage allowances
  • Outputs and citations need human review
  • <cite index="6-31,6-34">Potential gaps in training on specific frameworks; poor performance on Tailwind CSS v3 tasks, suggesting possible smaller model size limitations</cite>
  • <cite index="6-36">Its reasoning model nature makes it unsuitable for interactive workflows requiring fast responses despite fast token throughput</cite>

Made up your mind?

ChatGPT

Freemium

Best for People working with documents and research

Visit ChatGPT See full review

Grok Code Fast 1

Freemium

Best for <cite index="1-4">Agentic coding workflows requiring fast loops of reasoning and tool calls</cite>

Visit Grok Code Fast 1 See full review

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Specs come from each tool's own site and docs (how we test). AIDiveForge is editorially independent.

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