GPT-5.5 Sol

OpenAI · Closed · 5.5

Previous-generation OpenAI flagship. Superseded by GPT-5.6.

Status: superseded
Release date: 2026-05-01
Parameters: unknown
Context window: 128K
Modalities: text,code,image
Capabilities recorded: tool use, structured output, API
Last verified: 2026-07-20

Reviewed use cases

general reasoning
coding

Recorded limitations

Superseded

Pricing is omitted until provider-model pricing rows have their own completed review and publication state.