GPT-5.1 API pricing on OpenRouter
Every OpenRouter GPT-5.1 rate we track, compared against 1 provider serving the same model.
OpenRouter GPT-5.1 rates
Prices per 1M tokens. Batch and cached-input rates are shown where the provider publishes them.
| Mode | Input | Output |
|---|---|---|
| Standard | $1.25/1M | $10.00/1M |
About GPT-5.1
- Creator
- OpenAI
- Context
- 256K
- Modalities
- text, image
- Knowledge cutoff
- Mar 2025
- Tool calling
- Yes
About OpenRouter
OpenRouter provides a unified API for accessing hundreds of AI models from multiple providers. It aggregates models from OpenAI, Anthropic, Google, Meta, Mistral, and many others, offering a single endpoint with automatic fallback routing and provider optimization.
Frequently Asked Questions
How much does GPT-5.1 cost on OpenRouter?
OpenRouter serves GPT-5.1 from $1.25 per 1M input tokens, across 1 tracked pricing mode. Prices are collected daily — see the table above for current input, output, and cached-input rates.
Is OpenRouter the cheapest way to run GPT-5.1?
Of the 1 providers we track serving GPT-5.1, OpenRouter currently has the lowest input price. Rates change often, and throughput and latency differ between providers — check the comparison above before committing.
Does OpenRouter offer batch or cached pricing for GPT-5.1?
We track 1 GPT-5.1 offering from OpenRouter. Batch and cached-input rates appear in the table above when the provider publishes them; blank cells mean we have no current figure for that mode.