GPT-5.5 Instant
openai/gpt-5.5-instant
Compact GPT model for low-latency assistance and high-volume workloads
Capabilities
ReasoningYes
Tool callingYes
Structured outputYes
TemperatureSupported
AttachmentYes
Open weightsNo
Limits
Context400,000 tokens
Max input400,000 tokens
Max output128,000 tokens
Details
FamilyN/A
Knowledge cutoff2025-12-01
Release date2026-05-05
Last updated2026-05-28
Modalities
Inputtext, image, pdf
Outputtext
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Pricing
Cost per 1M tokens
InputN/A
OutputN/A