Claude Opus 4.8 vs Grok 4.5
Grok 4.5 is about 3.3× cheaper than Claude Opus 4.8 on blended token cost ($3 vs $10 per 1M). Claude Opus 4.8 (Anthropic) is $10/1M blended, 1M context. Grok 4.5 (xAI) is $3/1M blended, 500K context.
Last verified: 13 Aug 2026 · prices from official provider documentation
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| Spec | Claude Opus 4.8 | Grok 4.5 |
|---|---|---|
| Provider | Anthropic | xAI |
| Status | GA | GA |
| Input $/1M | $5 | $2 ◎ |
| Output $/1M | $25 | $6 ◎ |
| Blended $/1M | $10 | $3 ◎ |
| Context | 1M ◎ | 500K |
| Max output | 128K | — |
| Cutoff | 2026-01 | — |
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