gpt-5.2

proprietary

GPT-5.2 is our previous flagship model for complex professional work. We recommend using the latest GPT-6 Astra. Learn more on the Model guidance page. Reasoning.effort supports: none (default), low, medium, high and xhigh.

Intelligence
Reasoning
Speed
Context
400K
Max output
128K
Input price
$1.75/1M tokens
Output price
$14/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Provider Vercel AI Gateway
Creator OpenAI
Familygpt-5.2
Licenseproprietary
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window400K tokens
Max input—
Max output128K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$1.75
Output
$14
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gpt-5.2

ModelContextMax outPricing
gpt-5.2-chat128K—$1.75$14
gpt-5.2-codex400K128K$1.75$14
gpt-5.2400K128K$1.75$14
gpt-5.2-pro400K128K$21$168

API

GET/v1/models/vercel/openai/gpt-5.2

gpt-5.2

GPT-5.2 is our previous flagship model for complex professional work. We recommend using the latest GPT-6 Astra. Learn more on the Model guidance page. Reasoning.effort supports: none (default), low, medium, high and xhigh.

Changes · 3 entries
openai/gpt-5.2updateb301ebeMar 23, 2026, 11:47 PM
modalitiesinput["text"]output["text"]
openai/gpt-5.2update2b100acMar 23, 2026, 05:30 AM
model_typechat
tools["function_calling"]
openai/gpt-5.2create7f5c66fMar 21, 2026, 05:16 AM