Grok 3
Grok 3 is an API-only (closed weights) language model from xAI, released April 9, 2025. On the Epoch Capabilities Index it scores 137.5, rank 133 of 256 rated models.
Check it against your own PC →
Lab
xAI
Released
April 9, 2025
Weights
API-only (closed weights)
Parameters
–
Context
–
Price / M tokens
–
Epoch ECI
137.5 #133
Strengths by category
ModelTape's 0–100 fit on Epoch AI benchmark results.
| Category | Score | Based on |
|---|---|---|
| Math | 28.6 | MATH level 5, OTIS Mock AIME 2024-2025, FrontierMath-2025-02-28-Private, FrontierMath-Tier-4-2025-07-01-Private |
Benchmark results
| Benchmark (Epoch AI) | Score |
|---|---|
| MATH level 5 | 88.7% |
| GPQA Diamond | 70.5% |
| OTIS Mock AIME | 55.5% |
| Aider Polyglot | 53.3% |
| Balrog | 29.5% |
| SimpleBench | 23.3% |
| FrontierMath-2025-02-28-Private | 6.7% |
| FrontierMath-Tier-4-2025-07-01-Private | 0.0% |
Links
Models with a similar score
Kimi K2 (Jul 2025) · o1 · Claude 3.7 Sonnet · Gemini 2.5 Pro (May 2025) · DeepSeek-V3.1 · Gemini 2.5 Flash (Jun 2025) · Gemini 2.5 Flash (Apr 2025) · DeepSeek-R1 (May 2025)
More from xAI
Grok 4.7 · Grok 4.6 · Grok 4.5 · Grok 4.3 Beta · Grok Build 0.1 · Grok 4.20 Multi-Agent · Grok 4.20 · Grok 4.1 Fast