Loading page
GPT-5.1 API pricing on OpenRouter
Every OpenRouter GPT-5.1 rate we track, compared against 2 providers serving the same model.
Input from /1M
$0.625
Output /1M
$5.00
Price rank
#1 of 2
Last updated
September 18, 2026
The cheapest GPT-5.1 input price we currently track is $0.625/1M on OpenAI.
OpenRouter GPT-5.1 rates
Prices per 1M tokens. Batch and cached-input rates are shown where the provider publishes them.
| Mode | Input | Output |
|---|---|---|
| Batch | $0.625/1M | $5.00/1M |
| 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
GPT-5.1 on other providers
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 $0.625 per 1M input tokens, across 2 tracked pricing modes. 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?
OpenRouter ranks #1 of 2 providers we track serving GPT-5.1. The cheapest input price right now is on OpenAI. Price is only one factor — throughput, latency, and context limits differ between providers.
Does OpenRouter offer batch or cached pricing for GPT-5.1?
We track 2 GPT-5.1 offerings 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.