OpenAI/ GPT
GPT-5.5 Pro
openai/gpt/5-5-pro
Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding
Released
2026-04-23
Context window
1.1M
Max output
128K
Weights
Closed
Modalities
Input
TextImageDocument
Output
Text
Identity
- Version
- gpt-5.5-pro
- Knowledge cutoff
- 2025-12-01
- Aliases
- GPT-5.5 Pro
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| CrossModel | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| Poe | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $27.2727/M output $163.6364/M | Yes |
| FastRouter | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| LLM Gateway | gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| OpenCode Zen | gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M · cache read $30/M output $180/M | Yes |
| ZenMux | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| OrcaRouter | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| Kilo Gateway | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| Vercel AI Gateway | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
| OpenRouter | openai/gpt-5.5-pro | openai_chat | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | Moderated, Default reasoning: medium | input $30/M output $180/M | Yes |
| OpenAI | gpt-5.5-pro | openai_responses | 1.1M | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $30/M output $180/M | Yes |
Capabilities
AttachmentsReasoningTool callStructured
Official price
input $30/M
output $180/M