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Favicon for openai

OpenAI: GPT-5.2 Pro

openai/gpt-5.2-pro

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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.

Modalities

In / Out Price

$21 / $168per 1M

Context

400K

Released

Dec 10, 2025

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About OpenAI: GPT-5.2 Pro

OpenRouter makes OpenAI: GPT-5.2 Pro available through a unified, OpenAI-compatible API using the model ID openai/gpt-5.2-pro. It is served by OpenAI.

OpenAI: GPT-5.2 Pro accepts images, text and files such as PDFs and returns text. It has a 400,000-token context window and a maximum output of 128,000 tokens.

On OpenRouter, OpenAI: GPT-5.2 Pro costs $21.00/M input tokens and $168.00/M output tokens, with separate rates for Web Search at $10.00/1K calls. It was released on December 10, 2025.

More models from OpenAI

  • GPT Transcribe
  • GPT-5.6 Luna Pro
  • GPT-5.6 Luna

Frequently asked questions

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.

GPT-5.2 Pro costs $21.00/M input tokens and $168.00/M output tokens, with separate rates for Web Search at $10.00/1K calls.

GPT-5.2 Pro has a 400,000 token context window. It supports up to 128,000 completion tokens.

Yes. GPT-5.2 Pro accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

GPT-5.2 Pro accepts images, text and files such as PDFs as input and returns text.

GPT-5.6 Luna Pro, GPT-5.6 Luna, GPT-5.6 Terra Pro and 55 more are other text models from OpenAI.

GPT-5.2 Pro was released on December 10, 2025.

ProvidersPricingPerformanceUptimeAppsActivityFAQ

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

Quick Start

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

$21.00$168.004.01s1 tps
100.00%

Throughput

1tok/s

P50, best across providers

Latency

4.01s

P50, best provider

Uptime (3d)

100.00%

Availability (3d)

99.84%

Availability over the last 3 days

Last 72 hours
Availability 99.84%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.51%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.

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