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Claude Haiku 4.5 vs GPT-5.6 Sol
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| Attribute | Claude Haiku 4.5 | GPT-5.6 Sol |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 143 | 162 |
| Coding | 22 | 95 |
| Math | 13 | 97 |
| Reasoning & Knowledge | 11 | 95 |
| Agentic & Tools | 20 | 66 |
| Specifications | ||
| Developer | Anthropic | OpenAI |
| Family | Claude | GPT |
| Released | Oct 15, 2025 | Jul 9, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 200K | 1.1M |
| Price — $/M input | $1.00 | $5.00 |
| Price — $/M output | $5.00 | $30.00 |
| Inputs | text, image, file | file, image, text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 67% | 100% |
| APEX | 9% | 40% |
| ARC-AGI | 48% | 98% |
| ARC-AGI-2 | 4% | 93% |
| FrontierMath | 6% | — |
| FrontierMath Tier 4 | 2% | — |
| GPQA Diamond | 71% | 93% |
| MATH Level 5 | 96% | — |
| SimpleQA Verified | 6% | 72% |
| Terminal-Bench | 36% | — |
| WebDev Arena | 1322 | 1620 |
| WeirdML | 45% | 89% |
| Humanity's Last Exam | — | 47% |
| SciCode | — | 56% |
| SimpleBench | — | 72% |
| τ²-bench | — | 85% |
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.