Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...
Anthropic: Claude Opus 4.8 — Anthropic. Context window 1,000,000 tokens. API pricing (per 1M tokens): Input $5, Output $25. License: Proprietary. LMArena 1,461. GPQA Diamond 91%.
| Provider | Anthropic |
|---|---|
| API model ID | anthropic/claude-opus-4.8 |
| Tier | Frontier |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $5 |
| API pricing (per 1M tokens) · Output | $25 |
| LMArena | 1,461 (claude-opus-4-8-high) |
| GPQA Diamond | 91% |
LMArena (CC-BY 4.0, best reasoning setting, 2026-10-02) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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