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GPT-5.6 Terra (batch) vs Grok 4.6
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| Attribute | GPT-5.6 Terra (batch) | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 156 |
| Coding | — | 91 |
| Math | — | 93 |
| Reasoning & Knowledge | — | 76 |
| Agentic & Tools | — | 89 |
| Specifications | ||
| Developer | OpenAI | xAI |
| Family | GPT | Grok |
| Released | Jul 9, 2026 | Aug 12, 2026 |
| Parameters | — | — |
| Availability | — | API access |
| Context window | 1.1M | 500K |
| Price — $/M input | $1.00 | $2.00 |
| Price — $/M output | $6.00 | $6.00 |
| Inputs | file, image, text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | — | 99% |
| APEX | — | 41% |
| ARC-AGI | — | 88% |
| ARC-AGI-2 | — | 67% |
| GPQA Diamond | — | 94% |
| Humanity's Last Exam | — | 43% |
| SciCode | — | 54% |
| SimpleQA Verified | — | 54% |
| WebDev Arena | — | 1631 |
| 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.