Claude Opus 5.5 vs Gemini 3.1 Pro (preview) API pricing
Prices updated · Source: OpenRouter models API
Claude Opus 5.5 costs $4.00 per 1M input tokens and $20.00 per 1M output tokens on Anthropic. Gemini 3.1 Pro (preview) costs $2.00 input and $12.00 output on Google AI Studio. On input, Claude Opus 5.5 is 2.0× the price of Gemini 3.1 Pro (preview); on output it is 1.7× the price of Gemini 3.1 Pro (preview).
Cost at typical workloads
| Workload | Claude Opus 5.5 | Gemini 3.1 Pro (preview) |
|---|---|---|
| Chatbot5M in / 1M out per month | $40.00/mo | $22.00/mo |
| RAG over documents50M in / 2M out | $240.00/mo | $124.00/mo |
| Content generation2M in / 10M out | $208.00/mo | $124.00/mo |
Calculate your own volume
| Host | Context | ||||
|---|---|---|---|---|---|
| Gemini 3.1 Pro (preview)Google | Google AI Studio | $2.00 | $12.00 | 1.05M | $44.00 |
| Claude Opus 5.5Anthropic | Anthropic | $4.00 | $20.00 | 1M | $80.00 |
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Standard-tier prices only; batch, flex and priority tiers and prompt-cache discounts are excluded. Compare every model in the full LLM API pricing table.
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