GPT-5.5 vs Grok 4: pricing, specs & reviews compared
Side-by-side comparison of GPT-5.5 (openai) and Grok 4 (xai) — pricing per million tokens, context length, licensing, benchmarks and community reviews on Reviuws.
| Spec | GPT-5.5 | Grok 4 |
|---|---|---|
| Provider | openai | xai |
| License | closed | closed |
| Parameters | — | — |
| Context | 400k | 256k |
| Input price / M tok | $2.5 | $3 |
| Output price / M tok | $10 | $12 |
| Rating | 0.0 (0) | 0.0 (0) |