Claude Opus 4 vs GPT-6 Astra
GPT-6 Astra is cheaper on output tokens, while GPT-6 Astra offers a larger context window. Choose Claude Opus 4 or GPT-6 Astra based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Opus 4 | GPT-6 Astra |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $15.00 | $10.00 |
| Output / 1M tokens | $75.00 | $50.00 |
| Context window | 200K | 1.1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | May 2025 | — |
| Aider Polyglot score | 72.0 | — |
| LMArena (Chatbot Arena) Elo score | 1377 | 1442 |
| LMArena Vision Elo score | 1192 | 1281 |
| GPQA Diamond score | 76.3 | 95.8 |
| FrontierMath score | 4.5 | — |
| Epoch Capabilities Index score | 143 | 166 |
| LMArena WebDev Elo score | — | 1780 |
FAQ
Is Claude Opus 4 or GPT-6 Astra cheaper?
GPT-6 Astra is cheaper on output tokens ($50.00 vs $75.00 per 1M).
Which has the larger context window, Claude Opus 4 or GPT-6 Astra?
GPT-6 Astra has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.