GPT-5.1 API pricing on OpenAI
Every OpenAI GPT-5.1 rate we track, compared against 2 providers serving the same model.
OpenAI currently has the cheapest GPT-5.1 input price among the 2 providers we track.
OpenAI 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 OpenAI
OpenAI is the leading AI research organization providing state-of-the-art language models including GPT-4o, o1 reasoning models, and multimodal capabilities through their API platform. They enable developers to build intelligent applications with pay-per-token pricing and extensive documentation.
Frequently Asked Questions
How much does GPT-5.1 cost on OpenAI?
OpenAI 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 OpenAI the cheapest way to run GPT-5.1?
Of the 2 providers we track serving GPT-5.1, OpenAI currently has the lowest input price. Rates change often, and throughput and latency differ between providers — check the comparison above before committing.
Does OpenAI offer batch or cached pricing for GPT-5.1?
We track 2 GPT-5.1 offerings from OpenAI. 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.