Gemini 3.1 Pro vs Grok 4.5
Gemini 3.1 Pro (Google DeepMind) and Grok 4.5 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- Gemini 3.1 Pro leads on overall intelligence (ECI 155 vs 154).
- Grok 4.5 ranks higher for coding (86th vs 59th percentile).
| Attribute | Gemini 3.1 Pro | Grok 4.5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 155 | 154 |
| Coding | 59 | 86 |
| Math | 71 | 84 |
| Reasoning & Knowledge | 93 | 65 |
| Agentic & Tools | 79 | 70 |
| Specifications | ||
| Developer | Google DeepMind | xAI |
| Family | Gemini | Grok |
| Released | Feb 19, 2026 | Jul 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | — | 500K |
| Price — $/M input | — | $2.00 |
| Price — $/M output | — | $6.00 |
| Inputs | — | text, image, file |
| Outputs | — | text |
| Benchmarks | ||
| AIME 2024/2025 | 96% | 98% |
| APEX | 34% | 34% |
| ARC-AGI | 98% | 87% |
| ARC-AGI-2 | 77% | 53% |
| FrontierMath | 37% | — |
| FrontierMath Tier 4 | 17% | — |
| GPQA Diamond | 94% | 93% |
| GSO (code optimization) | 23% | — |
| Humanity's Last Exam | 46% | 43% |
| METR task horizon | 6.4 h | — |
| SimpleBench | 80% | 70% |
| SimpleQA Verified | 77% | 54% |
| SWE-bench Verified | 76% | — |
| Terminal-Bench | 80% | — |
| WebDev Arena | 1461 | 1551 |
| WeirdML | 72% | 46% |
| SciCode | — | 54% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Gemini 3.1 Pro better than Grok 4.5?
On Epoch AI's Capabilities Index, Gemini 3.1 Pro scores higher (155) than Grok 4.5 (154). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Gemini 3.1 Pro or Grok 4.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.5 ranks higher — 86th vs 59th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.