OpenAI
GPT-5.5
GPT-5.5 — frontier GPT-5 series model with 1M context, adaptive reasoning, vision, and strong agentic long-context performance.
gpt-5.5Catalog preview. Paid requests for this model are not enabled yet.
Pricing
~98%USD. No uRouter markup. Live prices can change.
- Input
- $0.124995 / 1,000,000 tokens
- Output
- $0.74997 / 1,000,000 tokens
- Cache read
- $0.0125 / 1,000,000 tokens
- Cache write
- $0.124995 / 1,000,000 tokens
Model details
- Input
- text, image
- Output
- text
- Context window
- 1,000,000 tokens
- Maximum output
- 128,000 tokens
- Availability
- $11.3KUncapped capacity
- Updated
- 11/8/2026, 1:57:54 AM UTC
Capacity is reserved when your request is accepted.
Price history
Observed best prices · Last 24 hours · UTC
$0.124995/ 1,000,000 tokens
Capabilities
chatstreamingtoolsvisionreasoning
Supported parameters
max_tokenstemperaturetop_pfrequency_penaltypresence_penaltylogit_biaslogprobstop_logprobsstoptoolstool_choiceresponse_formatseedstructured_outputsListed capabilities describe the model. uRouter execution support is verified separately.