GPT-5.1-Instant: API pricing, providers and specs
GPT-5.1-Instant is a text model by OpenAI. 2 providers serve it, from $10 to $10 /1M; the lowest price is at OrcaRouter.
How GPT-5.1-Instant compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $10 /1M, its lowest price is above 86% of comparable models (median $1.10).
- 2 providers serve it; 36% of comparable models have fewer.
GPT-5.1-Instant prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 OrcaRouter | $1.25/1M | $10/1M | $0.125/1M | — |
 Helicone | $1.25/1M | From$10/1M | $0.125/1M | — |
- OrcaRouter$10
- HeliconeFrom$10
Specs
- Type
- Text
- Maker
- OpenAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- —
- Max output
- 16K
- Capabilities
- Prompt caching, JSON, Tool calling, Vision
- Released
- —
- License
- —
- Open weights
- —
Alternatives to GPT-5.1-Instant
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| GPT-5.1-Instantthis model | $10/1M | — | — | 2 |
 Gemini 4 Argon | $8/1M | 1.05M | 1673 | 26 |
| Kimi K3 | $8.28/1M | 1.05M | 1655 | 47 |
 Muse Wonder | $16/1M | 1.05M | — | 14 |
| Claude Opus 5.5 | $16/1M | 1M | 1807 | 33 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
| Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
| Claude Sonnet 5.5 | $8/1M | 1M | 1767 | 32 |
More from OpenAI
GPT-5.1-Instant FAQ
The lowest price for GPT-5.1-Instant is $10 /1M, at OrcaRouter.
OrcaRouter, at $10 /1M. 2 providers serve GPT-5.1-Instant; the table above lists every one with its price.
We have not found GPT-5.1-Instant's weights published by its maker.
2 API providers serve GPT-5.1-Instant. Compare their prices above, or open a provider to see everything it offers.
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