GPT-5.5 VS Grok 4
OpenAI · xAI · AI Models · Updated May 23, 2026
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Grok 4xAI · Grok 4 is 300.0% cheaper
WINNERSide-by-Side Breakdown
| Feature | GPT-5.5 | Grok 4 | Winner |
|---|---|---|---|
| Input Price | $5.00/1M tkns | $1.25/1M tkns | ✓ Grok 4 |
| Output Price | $30.00/1M tkns | $2.50/1M tkns | ✓ Grok 4 |
| Provider | OpenAI | xAI | — |
| Category | ai-model | ai-model | — |
| context window | 1050000 | 2000000 | |
| vision | true | true | |
| modalities | text+vision | text+vision | |
| Overall Winner | 🏆 | Grok 4 |
GPT-5.5 vs Grok 4: Quick Summary
Grok 4 is the more affordable choice. GPT-5.5 costs $5.00/1M tkns vs Grok 4 at $1.25/1M tkns (Input Price). Grok 4 is 300.0% cheaper. Pricing verified as of May 23, 2026 — always confirm on the provider's official pricing page before committing.