GPT-5.6 Sol vs Grok 4.5
Grok 4.5 is about 3.8× cheaper than GPT-5.6 Sol on blended token cost ($3 vs $11.25 per 1M). GPT-5.6 Sol (OpenAI) is $11.25/1M blended, 1.1M 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 | GPT-5.6 Sol | Grok 4.5 |
|---|---|---|
| Provider | OpenAI | xAI |
| Status | GA | GA |
| Input $/1M | $5 | $2 ◎ |
| Output $/1M | $30 | $6 ◎ |
| Blended $/1M | $11.25 | $3 ◎ |
| Context | 1.1M ◎ | 500K |
| Max output | 128K | — |
| Cutoff | 2026-02-16 | — |
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