Benchable
Image input
Text input
File input
Text output
Author's Description
GPT-5.2 Pro is OpenAI’s most advanced model, offering major improvements in agentic coding and long context performance over GPT-5 Pro. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.
Key Specifications
Context
400K
Released
Dec 10, 2025
Supported Parameters
This model supports the following parameters:
Reasoning
Max Tokens
Response Format
Structured Outputs
Tools
Seed
Include Reasoning
Tool Choice
Features
This model supports the following features:
Tools
Response Format
Structured Outputs
Reasoning
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $21 |
| Completion | $168 |
| Web Search | $10000 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
OpenAI
|
OpenAI | openai/gpt-5.2-pro-20251211 | 400K | $21 / 1M tokens | $168 / 1M tokens |
No benchmark execution results are available for this model yet.
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|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
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Text input
File input
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Text input
File input
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Text input
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Text input
File input
Text output
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Text input
File input
Text output
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Text input
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Text output
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Text input
Text output
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Text input
Text output
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Text input
Text output
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★★★★★ | ★★ | $$$$ |
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Text input
Text output
|
★★★★★ | ★★★★★ | $$$$$ |
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Text input
Text output
|
— | — | $$$$ |
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Text input
Text output
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— | — | $$$$ |
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Text output
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★★★ | ★★ | +$$$$$ |
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Text input
Text output
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