gpt-5.5

Common Name: GPT-5.5

OpenAI
Released on Apr 24 12:00 AMSupportedTool InvocationSupportedReasoning
Terminal#1Science#3
CompareTry in Chat

GPT-5.5 is OpenAI's latest frontier model, designed for stronger agentic execution, coding, tool use, and long-context task completion.

Specifications

Context
1050K
Maximum Output
128K
Inputtext, image
Outputtext

Performance (7-day Average)

Collecting…
Collecting…
Collecting…

Pricing

Standard
Short Context (≤ 272K tokens)
Input$5.50/MTokens
Cached Input$0.55/MTokens
Output$33.00/MTokens
Long Context (> 272K tokens)
Input$11.00/MTokens
Cached Input$1.10/MTokens
Output$49.50/MTokens
Flex
Short Context (≤ 272K tokens)
Input$2.75/MTokens
Cached Input$0.275/MTokens
Output$16.50/MTokens
Long Context (> 272K tokens)
Input$5.50/MTokens
Cached Input$0.55/MTokens
Output$24.75/MTokens
Batch
Short Context (≤ 272K tokens)
Input$2.75/MTokens
Cached Input$0.275/MTokens
Output$16.50/MTokens
Long Context (> 272K tokens)
Input$5.50/MTokens
Cached Input$0.55/MTokens
Output$24.75/MTokens
Priority
Short Context (≤ 272K tokens)
Input$13.75/MTokens
Cached Input$1.375/MTokens
Output$82.50/MTokens
Long Context (> 272K tokens)

Not Supported

Performance Metrics (24h)

Similar Models

GPT-5.6

$5.50/$33.00/M
ctx1.1Mmax128Kavail—tps—
InOutCap

GPT-5.6 is OpenAI's latest GPT-5.6 alias, routing requests to GPT-5.6 Sol for frontier capability across complex reasoning, coding, and production workflows.

GPT-5.6 Sol

$5.50/$33.00/M
ctx1.1Mmax128Kavail—tps—
InOutCap

GPT-5.6 Sol is the frontier model in the GPT-5.6 family for complex reasoning, coding, tool use, and demanding production workflows.

GPT-5.4

$2.75/$16.50/M
ctx1.1Mmax128Kavail—tps—
InOutCap

GPT-5.4 is OpenAI's most capable frontier model for professional work, unifying GPT and Codex lines. Features native computer use, 1M+ context, and configurable reasoning effort (none to xhigh).

GPT-4o Search Preview (2025-03-11)

$2.75/$11.00/M
ctx128Kmax16Kavail—tps—
InOutCap

Preview version of GPT-4o with integrated web search for enhanced real-time knowledge and information access.