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GPT-6 Astra vs Solar Pro 3
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| Attribute | GPT-6 Astra | Solar Pro 3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 169 | — |
| Coding | 95 | 2 |
| Math | 96 | — |
| Reasoning & Knowledge | 99 | 10 |
| Agentic & Tools | 96 | 46 |
| Specifications | ||
| Developer | OpenAI | Upstage |
| Family | GPT | — |
| Released | Sep 3, 2026 | Jan 27, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1.1M | 131K |
| Price — $/M input | $10.00 | $0.15 |
| Price — $/M output | $50.00 | $0.60 |
| Inputs | file, image, text | text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | — |
| APEX | 47% | — |
| ARC-AGI | 99% | — |
| ARC-AGI-2 | 95% | — |
| GPQA Diamond | 96% | 72% |
| Humanity's Last Exam | 55% | 10% |
| SciCode | 56% | 26% |
| SimpleQA Verified | 76% | — |
| WebDev Arena | 1797 | — |
| WeirdML | 93% | — |
| τ²-bench | — | 86% |
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.