How much does the Grok Code Fast 1 API cost?

Grok Code Fast 1 costs $0.2 per million input tokens and $1.5 per million output tokens, with cached input at $0.02 per million. A workload of 10M input and 1.5M output tokens per month costs about $4.25.

What is the context window of Grok Code Fast 1?

Grok Code Fast 1 supports a context window of 256,000 tokens (256K).

Is Grok Code Fast 1 open source?

No — Grok Code Fast 1 is a proprietary model available through xAI's API and partner platforms.

What are the best alternatives to Grok Code Fast 1?

The closest alternatives by overall capability are Qwen3-Max, GPT-5.5, Gemini 3 Pro, Gemini 2.5 Pro. See the comparison pages for detailed head-to-head breakdowns.

Grok Code Fast 1

xAI·Aug 2025reasoningproprietary

Grok Code Fast 1 is xAI's dedicated coding model, optimized for the rapid-fire edit-test loops of agentic IDEs rather than peak benchmark scores. Its combination of low price, high speed and solid SWE-bench performance made it a default fast-tier option in several coding assistants. For quick mechanical edits it remains one of the best cost-per-task options available.

Benchmark results

SWE-bench VerifiedCoding · #22 of 3370.8%

Where it shines

Optimized for high-frequency agentic coding loops
Aggressive pricing with deep cache discounts
Low latency for IDE responsiveness

Alternatives to Grok Code Fast 1

Qwen3-Max

Alibaba's trillion-parameter API flagship — frontier-adjacent quality with strong agentic tool use at mid-tier prices.

GPT-5.5

OpenAI's flagship reasoning model with a 1M-token context window, built for hard coding, science and long-horizon agentic work.

Gemini 3 Pro

Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.

Gemini 2.5 Pro

Google's 2025 workhorse flagship — first mainstream thinking model with a 1M context, still widely deployed.

Frequently asked questions

How much does the Grok Code Fast 1 API cost?: Grok Code Fast 1 costs $0.2 per million input tokens and $1.5 per million output tokens, with cached input at $0.02 per million. A workload of 10M input and 1.5M output tokens per month costs about $4.25.
What is the context window of Grok Code Fast 1?: Grok Code Fast 1 supports a context window of 256,000 tokens (256K).
Is Grok Code Fast 1 open source?: No — Grok Code Fast 1 is a proprietary model available through xAI's API and partner platforms.
What are the best alternatives to Grok Code Fast 1?: The closest alternatives by overall capability are Qwen3-Max, GPT-5.5, Gemini 3 Pro, Gemini 2.5 Pro. See the comparison pages for detailed head-to-head breakdowns.