Model prices / OpenAI / GPT-5.5 Pro
GPT-5.5 Pro
OpenAI · released 2026-04-23
The official API price of GPT-5.5 Pro is $30 per 1M input tokens and $180 per 1M output tokens (as of 2026-11-12). Context window: 1.05M tokens, up to 128K output tokens per request. 21 providers sell it. The lowest is Poe: $27.2727 input, $163.6364 output.
Price by providerUSD per 1M tokens
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
| OpenAIOfficialTiered pricinggpt-5.5-pro | $30 | $180 | — | OfficialTiered pricing | Official docs |
 PoeLowestopenai/ | $27.2727 | $163.6364 | — | Lowest | Official docs |
 AIHubMixTiered pricinggpt-5.5-pro | $30 | $180 | — | Tiered pricing | Official docs |
 Cloudflare AI Gatewayopenai/ | $30 | $180 | — | Official docs | |
CCrossModelTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
EEden AITiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
FFastRouterTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
IImpossiblTiered pricingopenai/ | $30 | $180 | $3 | Tiered pricing | Official docs |
KKilo Gatewayopenai/ | $30 | $180 | — | Official docs | |
 DevPass (LLM Gateway)Tiered pricinggpt-5.5-pro | $30 | $180 | — | Tiered pricing | Official docs |
LLLM GatewayTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
NNeonTiered pricinggpt-5-5-pro | $30 | $180 | — | Tiered pricing | Official docs |
9 more listings
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
 OpenCodegpt-5.5-pro | $30 | $180 | $30 | Official docs | |
 OpenRouterTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
OOppergpt-5.5-pro | $30 | $180 | — | Official docs | |
OOrcaRouterTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
RRequestygpt-5.5-pro | $30 | $180 | — | Official docs | |
 Venice AITiered pricingopenai-gpt-55-pro | $30 | $180 | — | Tiered pricing | Official docs |
 Vercel AI GatewayTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
 ZenMuxTiered pricingopenai/ | $30 | $180 | — | Tiered pricing | Official docs |
 AI/ML APIopenai/ | $31.74 | $190.44 | — | Official docs |
Providers are those listed by models.dev. This site has not vetted them one by one; each provider's own page has the binding price.
About
Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding
Description from models.dev.
Specs
- Type
- Text
- Context
- 1.05M
- Max output
- 128K
- Input
- Text, Image, PDF
- Output
- Text
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Knowledge cutoff
- 2025-12-01
- Open weights
- No
- Released
- 2026-04-23
Source
Prices and specs come from models.dev (MIT licence), updated 2026-11-12. Each provider's name links to its official docs. A provider priced at 0 usually includes the model in a subscription; it is not necessarily a free API.