xAI: Grok Code Fast 1
Analysis Summary
Grok Code Fast 1 is xAI's coding-focused fast model, with an intelligence index of 21.6 and a coding index of 23.7. Its standout metric is its agentic index of 46.6, which is strong for its tier and makes it a capable option for multi-step tool-augmented workflows. The tau2 score of 0.757 confirms reliable task completion in agentic settings. Tool use and function calling are supported, and the 256K context window is a meaningful advantage for large codebase or document tasks.
For business use, Grok Code Fast 1 is well suited to agentic coding pipelines, automated tool-use workflows, and tasks requiring reliable multi-step execution at moderate cost. Its livecodebench score of 0.657 is reasonable, and its instruction following at 0.414 is adequate for structured tasks. General reasoning depth is limited, so complex analytical workloads are better handled by larger models.
At $0.20 input and $1.50 output, pricing is competitive for its agentic capability. Teams in the xAI ecosystem looking for a fast, cost-effective model for coding agents and tool-augmented automation will find it a practical choice.
Assessed June 17, 2026
Editorial notes
Grok Code Fast 1 from xAI delivers a strong agentic index and solid coding performance with a 256K context window, at a competitive price for an major providers.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How xAI: Grok Code Fast 1 compares
XAI: Grok Code Fast 1 ranks #125 of 380 AI models we track for overall intelligence, #105 of 292 for agentic tasks. Its 256K-token context window is larger than 70% of the models we list. At $0.20 per million input tokens it is cheaper than 53% of comparable models.
About xAI: Grok Code Fast 1
Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. With reasoning traces visible in the response, developers can steer Grok Code for high-quality..
Capabilities
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does xAI: Grok Code Fast 1 stack up?
Compare side-by-side with other specialist models.
Model Information
| OpenRouter ID |
x-ai/grok-code-fast-1
|
| Provider | x-ai |
| Release Date | August 26, 2025 |
| Context Length | 256,000 tokens |
| Max Completion | 10,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.20 | $0.000200 |
| Output | $1.50 | $0.001500 |
Leaderboard Categories
External Resources
Frequently asked questions about xAI: Grok Code Fast 1
How much does xAI: Grok Code Fast 1 cost?
xAI: Grok Code Fast 1 costs $0.20 per million input tokens and $1.50 per million output tokens.
What is the context window of xAI: Grok Code Fast 1?
xAI: Grok Code Fast 1 has a context window of 256,000 tokens (256K).
What can xAI: Grok Code Fast 1 do?
xAI: Grok Code Fast 1 supports tool use and function calling.
Who created xAI: Grok Code Fast 1?
xAI: Grok Code Fast 1 is developed by xAI and was released on August 26, 2025.
