OpenAI/ GPT
GPT-5.5 Instant
openai/gpt/5-5-instant
Compact GPT model for low-latency assistance and high-volume workloads
Released
2026-05-05
Context window
400K
Max output
128K
Weights
Closed
Modalities
Input
TextImageDocument
Output
Text
Identity
- Version
- gpt-5.5-instant
- Knowledge cutoff
- 2025-12-01
- Aliases
- GPT-5.5 Instant
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| ZenMux | openai/gpt-5.5-instant | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructuredTemperature | - | input $5/M · cache read $0.5/M output $30/M | Yes |
Capabilities
AttachmentsReasoningTool callStructuredTemperature