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Grok Code Fast 1

Grok Code Fast 1 is a standard model from xAI. 11 benchmarks count toward its index, in 5 categories.

  • Closed weights
  • Standard
  • Input: text
  • Released 2025-08
RankedEnough results for an index.
IndexAll categories, out of 100.41.2±7.4Median 51.0
CoverageIndex weight that has results.75%
SpeedOutput tokens per second.172/sMedian 67/s
First tokenSeconds to the first output token.2.8 sMedian 1.3 s
Input / 1MUS dollars per 1M input tokens.$0.20Median $0.60
Output / 1MUS dollars per 1M output tokens.$1.50Median $2.55
ContextMaximum tokens in one request.256KMedian 262K
EloLMArena rating and rank.—Median 1422

Capabilities

Index per category, out of 100.
Out of 100
AgenticMulti-step tasks with tools.2 counted42.9169 / 218
CodingCode writing and repair.3 counted45.5160 / 209
ReasoningLogic problems and puzzles.2 counted40.3161 / 227
MultimodalTasks with images and text.None counted——
KnowledgeFacts and expert knowledge.3 counted38.9201 / 268
MultilingualTasks in many languages.None counted——
InstructionTasks with strict prompt rules.1 counted27.7—
MathMath problems.None counted——

Results

11 counted
BenchmarkThe benchmark name.ResultThe score from the source.PlacePlace among results on this benchmark.
τ²-Bench Tool-Agent-User EvaluationAgentic75.7%74 / 149
Software Engineering Benchmark VerifiedCoding70.8%67 / 114
Artificial Analysis GPQA DiamondKnowledge72.7%129 / 199
Artificial Analysis Long Context ReasoningReasoning53.0%148 / 217
Artificial Analysis Omniscience AccuracyKnowledge23.5%112 / 164
Artificial Analysis IFBenchInstruction41.4%100 / 146
Artificial Analysis Humanity's Last ExamKnowledge8.0%153 / 222
Critical Physics TasksReasoning0.0%150 / 214
LiveCodeBenchCoding62.0% ±1.2105 / 142
IOI v1Coding4.3% ±1.247 / 61
Terminal-Bench 1.0Agentic20.0% ±4.541 / 47

Sources

BenchLMCC BY-NC 4.0Vals AINo licence stated

History

5 releases
Index41.9 → 41.2
23 Oct 202612 Nov 2026
Output / 1M$1.50 → $1.50
23 Oct 202612 Nov 2026

Questions

How much does Grok Code Fast 1 cost?
$0.20 per 1M input tokens, $1.50 per 1M output tokens.
How good is Grok Code Fast 1?
Its index is 41.2 out of 100. That is place 205 of 283 ranked models.
What is Grok Code Fast 1 best at?
Reasoning: 40.3 out of 100, place 161 of 227.
How fast is Grok Code Fast 1?
172 output tokens per second, 2.8 s to the first token.
What is the context window of Grok Code Fast 1?
256K tokens.
Is Grok Code Fast 1 open source?
No. Its weights are not published.
When was Grok Code Fast 1 released?
August 2025.

Badge

Grok Code Fast 1 on Inference360: place 205 of 283, index 41.2
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Markdown
[![Grok Code Fast 1 on Inference360: place 205 of 283, index 41.2](https://inference360.ai/badges/grok-code-fast-1.svg)](https://inference360.ai/models/grok-code-fast-1)

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