OpenAI

GPT-5.5

Near-FrontierProprietaryReasoningProprietary
Try in Playground →API Docs →
Input Price
$5.00
/M tokens
Output Price
$30.00
/M tokens
Arena Rank
#17
Overall
Context
1.05M
tokens

One9Founders Verdict

GPT-5.5 from OpenAI. Proprietary API model. 1.1M context. $5.0/$30.0 per 1M tokens. Arena text #17.

Pricing Details

Input
$5.00
per 1M tokens
Output
$30.00
per 1M tokens
Cached Input
$0.50
per 1M tokens
Batch Input
$2.50
per 1M tokens

Capabilities

✓Function Calling
✓Structured Output
✓Vision
-Web Search
-Code Execution
-MCP
✗Audio Input
✗Video Input
✓Reasoning
✓Streaming
-Batch API
-Computer Use

Chatbot Arena Rankings

Overall
#17

Security & Compliance

✓SOC 2 Type II
✓GDPR
✓HIPAA
✓Enterprise SSO
✓Audit Logs

Training data policy: API data not used for training by default (opt-out / ZDR available)

DPDP Act (India): No India-resident inference by default. Use DPA + region controls.

Data residency: US, EU

India Availability

API available globally

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