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Grok Code Fast 1

xAIProprietaryNon-reasoningProvisionalReleased Aug 28, 2025
Compare with Ornith-1.5-35B-A3BSource scores ↗
Overall score
34.1
Rank 164 of 222 · 24.4–43.8
Context window
256K
256,000 tokens
Price per 1M tokens
$0.20 in · $1.50 out
Source: BenchLM
Blended price
$0.53
3:1 input:output tokens
Output speed
—
Not measured yet

Category scores

Scores per capability area with the model's rank among ranked models in that category.

  1. 1Reasoning61.4
  2. 2Instruction following#9848.2
  3. 3Knowledge46.1
  4. 4Coding21.9
Higher is better. #N is the model's rank in that category, where it is eligible to be ranked.

Benchmark results (1)

As reported in system cards, papers and public evaluations. Position compares this model with every other model reporting the same benchmark.

Coding

SWE-bench Verified70.8#59 of 98

Pricing by source

USD per 1M tokens.

SourceInputOutputCached in
List price (BenchLM)$0.20$1.50—

Last published rate. xAI's official Grok Code Fast 1 launch post lists $0.20 input / $1.50 output per million tokens, with cached input at $0.02. xAI's pricing and models pages, read September 25, 2026, no longer list it.

Arena ratings

Human-preference ratings from LMArena. Best-rated variant shown.

WebDev (coding)1166#146 · 789 votes

Speed

Measured by us through OpenRouter (median of trials).

Not available on OpenRouter, so we cannot measure it yet.

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