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GPT-5.1-Codex-mini vs Grok 4.6
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| Attribute | GPT-5.1-Codex-mini | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 156 |
| Coding | 44 | 90 |
| Math | 56 | 91 |
| Reasoning & Knowledge | 21 | 73 |
| Agentic & Tools | 40 | 95 |
| Specifications | ||
| Developer | OpenAI | xAI |
| Family | GPT | Grok |
| Released | Nov 12, 2025 | Aug 12, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 400K | 500K |
| Price — $/M input | $0.25 | $2.00 |
| Price — $/M output | $2.00 | $6.00 |
| Inputs | image, text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 92% | 99% |
| GPQA Diamond | 81% | 94% |
| Humanity's Last Exam | 19% | 43% |
| LiveCodeBench | 84% | — |
| MMLU-Pro | 82% | — |
| SciCode | 43% | 56% |
| Terminal-Bench | 62% | — |
| WebDev Arena | 1247 | 1618 |
| τ²-bench | 63% | — |
| APEX | — | 65% |
| ARC-AGI | — | 88% |
| ARC-AGI-2 | — | 67% |
| SimpleBench | — | 76% |
| SimpleQA Verified | — | 49% |
| WeirdML | — | 67% |
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.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.