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Gemini 4 Argon1526Claude Opus 5.51516Claude Fable 5.11513Claude Opus 51508Claude Opus 4.61502▲4Muse Wonder1501Gemini 3.8 Flash1498MiMo-V2.6-Pro1491Muse Spark 1.31491Claude Fable 51491▼2Claude Opus 4.71490▲6Gemini 3.7 Flash1490Qwen3.8-Max1484▲3Gemini 3.5 Flash1482▼1Muse Spark 1.21482▼8Gemini 3.1 Pro Preview1480▲0Gemini 3.6 Flash1480▲0Gemini 3 Pro1480Muse Spark 1.11478▼2Qwen3.7-Max-Preview1475▲1Kimi K31475▲2Muse Spark1474▲1GLM-5.31474Claude Sonnet 5.51473GLM-5.3-Flash1472▲1GPT-5.51472▲6Qwen3.5-Max-Preview1470▼1GLM-5.21470▲6GPT-5.41469▲17ERNIE 5.11468▼0Gemini 3 Flash1466▼1DeepSeek-V4.1-Flash-202609101464Gemini 4 Argon1526Claude Opus 5.51516Claude Fable 5.11513Claude Opus 51508Claude Opus 4.61502▲4Muse Wonder1501Gemini 3.8 Flash1498MiMo-V2.6-Pro1491Muse Spark 1.31491Claude Fable 51491▼2Claude Opus 4.71490▲6Gemini 3.7 Flash1490Qwen3.8-Max1484▲3Gemini 3.5 Flash1482▼1Muse Spark 1.21482▼8Gemini 3.1 Pro Preview1480▲0Gemini 3.6 Flash1480▲0Gemini 3 Pro1480Muse Spark 1.11478▼2Qwen3.7-Max-Preview1475▲1Kimi K31475▲2Muse Spark1474▲1GLM-5.31474Claude Sonnet 5.51473GLM-5.3-Flash1472▲1GPT-5.51472▲6Qwen3.5-Max-Preview1470▼1GLM-5.21470▲6GPT-5.41469▲17ERNIE 5.11468▼0Gemini 3 Flash1466▼1DeepSeek-V4.1-Flash-202609101464
MiMo-V2.5-Pro1464▼1GLM-5.11463▲0Claude Opus 4.81461▲8Claude Sonnet 4.61458▼1Gemini 2.5 Pro1458GPT-5.6 Sol1457Kimi K2.61455▲0Qwen3.7-Plus1455▲0MiMo-V2.6-Flash1452DeepSeek-V4-Pro1451▲1Claude Opus 4.51451▲0Grok 4.20 Beta1451Grok 4.20 Multi-Agent Beta1451▲1amazon-nova-experimental-chat1449Dola Seed 2.0 Pro1448▲1GPT-5.6 Terra1448Grok 4.51448▼2Qwen3.6-Max-Preview1447▲1GLM-51446▼0Kimi K2.51445NVIDIA-Nemotron-3-Ultra-550B-A55B1445ERNIE 5.01445▲0Grok 4.20 Beta 11445▲0GPT-6.1 Sol1444Gemma 4 31B1443▲1GPT-5.11443▲20Claude Sonnet 51442GPT-6 Astra1442IInkling1442▲2Step 5 Preview1442GLM-4.61440▼0Qwen3.8-27B1440▲1MiMo-V2.5-Pro1464▼1GLM-5.11463▲0Claude Opus 4.81461▲8Claude Sonnet 4.61458▼1Gemini 2.5 Pro1458GPT-5.6 Sol1457Kimi K2.61455▲0Qwen3.7-Plus1455▲0MiMo-V2.6-Flash1452DeepSeek-V4-Pro1451▲1Claude Opus 4.51451▲0Grok 4.20 Beta1451Grok 4.20 Multi-Agent Beta1451▲1amazon-nova-experimental-chat1449Dola Seed 2.0 Pro1448▲1GPT-5.6 Terra1448Grok 4.51448▼2Qwen3.6-Max-Preview1447▲1GLM-51446▼0Kimi K2.51445NVIDIA-Nemotron-3-Ultra-550B-A55B1445ERNIE 5.01445▲0Grok 4.20 Beta 11445▲0GPT-6.1 Sol1444Gemma 4 31B1443▲1GPT-5.11443▲20Claude Sonnet 51442GPT-6 Astra1442IInkling1442▲2Step 5 Preview1442GLM-4.61440▼0Qwen3.8-27B1440▲1

xAI

Grok Code Fast 1

Grok Code Fast 1 is a proprietary model from xAI. Its best result is #106 of 143 on LiveCodeBench with 61.97%.

Developer
xAI
Released
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Context window
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Price in / out, per 1M tokens
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Weights
Proprietary
Inputs
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Reasoning
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Tool use
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Benchmarks

BenchmarkScore barAccuracyRankCost / test
LiveCodeBenchCoding61.97%106 / 143$0.2 / $1.5

Vals AI, as of Oct 24, 2026.

LMArena, by category

LeaderboardRatingRankVotes
WebDevLMArena1167148 / 124789

LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.

Compare Grok Code Fast 1

xAI

The lab behind Grok, trained on one of the largest compute clusters and integrated with X. Founded 2023, based in San Francisco Bay Area. x.ai

Questions

Who makes Grok Code Fast 1?

Grok Code Fast 1 is made by xAI, founded 2023 and based in San Francisco Bay Area.

Is Grok Code Fast 1 open source?

No. Grok Code Fast 1 is proprietary and served through its provider’s API.

Sources

Every number on this page comes from these sources; models without a published number show none. Download the data. Cite as “Nexus Explorer, nexus.inc/models”.