Compare
GPT-6 Astra vs Grok 4 Fast
Add, remove, or swap models to compare them side by side.
| Attribute | GPT-6 Astra | Grok 4 Fast |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 169 | 144 |
| Coding | 94 | 36 |
| Math | 96 | 48 |
| Reasoning & Knowledge | 99 | 26 |
| Agentic & Tools | 93 | 16 |
| Specifications | ||
| Developer | OpenAI | xAI |
| Family | GPT | Grok |
| Released | Sep 3, 2026 | Sep 19, 2025 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1.1M | — |
| Price — $/M input | $10.00 | — |
| Price — $/M output | $50.00 | — |
| Inputs | file, image, text | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 90% |
| APEX | 65% | — |
| ARC-AGI | 99% | 49% |
| ARC-AGI-2 | 95% | 5% |
| GPQA Diamond | 96% | 85% |
| Humanity's Last Exam | 55% | 19% |
| SciCode | 56% | 44% |
| SimpleQA Verified | 76% | — |
| WebDev Arena | 1800 | 1149 |
| WeirdML | 94% | 43% |
| LiveCodeBench | — | 83% |
| MMLU-Pro | — | 85% |
| τ²-bench | — | 66% |
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.
Popular comparisons
- Claude Fable 5 vs GPT-6 Astra
- GPT-6 Astra vs Kimi K3
- Gemini 3.7 Flash vs GPT-6 Astra
- GPT-6 Astra vs Grok 4.6
- DeepSeek-V4-Pro-0813 vs GPT-6 Astra
- GPT-6 Astra vs Qwen 3.7 Max
- GPT-6 Astra vs Muse Spark
- Claude Fable 5 vs Kimi K3
- Claude Fable 5 vs Gemini 3.7 Flash
- Claude Fable 5 vs Grok 4.6
- Claude Fable 5 vs DeepSeek-V4-Pro-0813
- Claude Fable 5 vs Qwen 3.7 Max
- Claude Fable 5 vs Muse Spark
- Gemini 3.7 Flash vs Kimi K3
- Grok 4.6 vs Kimi K3
- DeepSeek-V4-Pro-0813 vs Kimi K3
- Kimi K3 vs Qwen 3.7 Max
- Kimi K3 vs Muse Spark
- Gemini 3.7 Flash vs Grok 4.6
- DeepSeek-V4-Pro-0813 vs Gemini 3.7 Flash
- Gemini 3.7 Flash vs Qwen 3.7 Max
- Gemini 3.7 Flash vs Muse Spark
- DeepSeek-V4-Pro-0813 vs Grok 4.6
- Grok 4.6 vs Qwen 3.7 Max
- Grok 4.6 vs Muse Spark
- DeepSeek-V4-Pro-0813 vs Qwen 3.7 Max
- DeepSeek-V4-Pro-0813 vs Muse Spark
- Muse Spark vs Qwen 3.7 Max
- Claude Fable 5 vs Claude Opus 5
- GPT-5.6 Sol vs GPT-6 Astra
- GPT-5.5 vs GPT-6 Astra
- Kimi K2.6 vs Kimi K3
- Kimi K2.5 vs Kimi K3
Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.