Grok Code Fast 1 — benchmark results
xAI's fast, low-cost reasoning model for agentic coding, with a 256K context and ~70.8% SWE-bench Verified (August 2025). Provider: xAI. Released 2025-08-28. Access: API.
Unified ELO 1536 ± 24, rank #658 of 1776 rated models, from 112 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| Software Engineering Arena - Model Arena | 1002 | Elo Rating | 86.4 |
| GSMA Open-Telco - TeleLogs | 61 | Score (%) | 85.5 |
| SnakeBench | 27.9 | TrueSkill Rating | 79.5 |
| AA Omniscience - Software Engineering (SWE) - Dart | 34 | Accuracy (%) | 78.5 |
| AI Chess Leaderboard (Reasoning) | 893 | Elo | 78.3 |
| Multivac Evaluation | 9.12 | Avg Peer Score (0-10) | 77.8 |
| AA Omniscience - Software Engineering (SWE) - R | 30 | Accuracy (%) | 77.7 |
| GSMA Open-Telco LLM Leaderboard | 64.21 | Average Score (%) | 76.7 |
| GSMA Open-Telco - srsRAN-Bench | 82 | Score (%) | 76.2 |
| AA Omniscience - Software Engineering (SWE) - PHP | 40 | Accuracy (%) | 75 |
| GSMA Open-Telco - 3GPP | 55 | Score (%) | 75 |
| AA Omniscience - Software Engineering (SWE) - Go | 30 | Accuracy (%) | 74.3 |
Interactive version: theaggregate.ai/model?slug=grok-code-fast-1 · How the rankings work · Data refreshed daily, snapshot 2026-07-22.