GPT-5.2

Latest GPT-5 model with enhanced reasoning and tool support.

400,000 context
Released December 11, 2025
Starting at $1.57/M (10% off) input tokens
Starting at $12.60/M (10% off) output tokens
Streaming
Vision
Tools
Reasoning
JSON Output
Structured JSON
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10% offthis model via OpenAI

Select Provider

All Providers for GPT-5.2

OffRail routes requests to the best providers that are able to handle your prompt size and parameters.

OpenAI
Context: 400k10% off
Input
$1.75$1.575
10% off
/M tokens
Cache Read
$0.175$0.1575
10% off
/M tokens
Output
$14$12.6
10% off
/M tokens
+ $0.010$0.009 per search
Get Started
Azure
Context: 400k
Input
$1.75
/M tokens
Cache Read
$0.175
/M tokens
Output
$14
/M tokens
Get Started

Frequently asked questions

What is GPT-5.2?

Latest GPT-5 model with enhanced reasoning and tool support. You can access it through OffRail's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does GPT-5.2 cost?

Pricing for GPT-5.2 on OffRail starts at $1.75 per million input tokens and $14.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of GPT-5.2?

GPT-5.2 supports a context window of up to 400,000 tokens on its largest provider deployment.

Which providers serve GPT-5.2?

GPT-5.2 is served by OpenAI, Azure through OffRail. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does GPT-5.2 support tool calling and structured outputs?

Yes. GPT-5.2 supports both tool (function) calling and strict JSON output schema (upstream-enforced) through OffRail.

When was GPT-5.2 released?

GPT-5.2 was released on December 11, 2025.