Claude Opus 4.5 vs Gemini 3.1 Pro preview vs GPT 5.5
Claude Opus 4.5 vs Gemini 3.1 Pro preview vs GPT 5.5: Gemini 3.1 Pro preview is the cheapest by 60%. Claude Opus 4.5 (Azure AI Foundry, 200,000 ctx); Gemini 3.1 Pro preview (Google Vertex AI, 1,048,576 ctx); GPT 5.5 (OpenAI, 1,050,000 ctx). Route any of them via Agent Command Center for shadow A/B without code changes.
| Claude Opus 4.5 | Gemini 3.1 Pro preview | GPT 5.5 | |
|---|---|---|---|
| Input price | $5.00/M | $2.00/M | $5.00/M |
| Output price | $25.00/M | $12.00/M | $30.00/M |
| Context window | 200,000 | 1,048,576 | 1,050,000 |
| Max output | 64,000 | 65,536 | 128,000 |
| Function calling | ✓ | ✓ | ✓ |
| Vision | ✓ | ✓ | ✓ |
| Audio input | — | ✓ | — |
| Reasoning | ✓ | ✓ | ✓ |
| Prompt caching | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ |
| Pricing verified | May 19, 2026 | May 19, 2026 | May 19, 2026 |
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