GPT-5.5
AvailableA prior GPT generation for reasoning and tool-driven work. First API availability is not yet reconciled in this pilot.
Access details: OpenAI · Responses API
Undated identifier · Undated API identifier. This pilot does not claim an immutable weights snapshot behind it.
gpt-5.5Capabilities & limits
- Context window
- 1.05M
- Maximum output
- 128K
- Image input
- Supported
- Tool calling
- Supported
- Structured output
- Supported
Documented interfaces and limits. These are not measures of model quality.
Pricing
USD / 1M tokens- Input
- $5.00
- Output
- $30.00
Standard text rates up to 272K input tokens. Longer sessions and regional processing have different rates. Cache, batch, and tools are excluded.
Detailed cache, batch, context-tier, and regional prices have not been captured yet. Check the provider's current pricing before budgeting.
Price history
Input $5.00 per million tokens
Output $30.00 per million tokens
Technical details
Technical details have not been verified for this identifier.
6 details not verified
- Parameters
- Active parameters
- Architecture
- Training / knowledge cutoff
- Input modalities
- Output modalities
From OpenAI
Official announcement link: not verified yet.
How they describe it
Provider quote not captured yet.
What they say is different
Provider quote not captured yet.
Verbatim provider claims · not an independent assessment
Release & lifecycle
Availability applies to this exact identifier on OpenAI · Responses API.
- First API availability
- Not verified
- available
- Observed Sep 13, 2026