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GPT-5.2

GPT-5.2 is an AI model made by OpenAI. OpenAI released it on 11 December 2025. It is generally available. Its context window is 400,000 tokens.

OpenAI

GPT-5.2 is an AI model made by OpenAI. OpenAI released it on 11 December 2025. It is generally available. Its context window is 400,000 tokens. Its longest answer is 128,000 tokens. Through the API it costs $1.75 per 1M tokens for input and $14.00 per 1M tokens for output. Its knowledge cutoff is 31 August 2025.

Released
11 December 2025 — openai.com, read 19 October 2026
Status
Generally available — developers.openai.com, read 19 October 2026
Takes
Not confirmed: two readings disagree: text, image and text, image, code
Returns
Not confirmed: two readings disagree: text and text, image, code
Open weights
Not confirmed: OpenAI's pages reviewed do not state whether GPT-5.2 weights are open or downloadable.
Licence
Not confirmed: OpenAI's pages reviewed do not print a licence name for GPT-5.2.
Context window
400,000 tokens — developers.openai.com, read 19 October 2026
Longest answer
128,000 tokens — developers.openai.com, read 19 October 2026
Knowledge cutoff
31 August 2025 — developers.openai.com, read 19 October 2026
API price, input
$1.75 per 1M tokens — developers.openai.com, read 19 October 2026
API price, output
$14.00 per 1M tokens — developers.openai.com, read 19 October 2026
Where
Not confirmed: two readings disagree: api and api, app
Parameters
Not confirmed: OpenAI's pages reviewed do not publish a parameter count for GPT-5.2.
Model card
https://cdn.openai.com/pdf/3a4153c8-c748-4b71-8e31-aecbde944f8d/oai_5_2_system-card.pdf — cdn.openai.com, read 19 October 2026

Benchmarks

Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.

Arena

Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0

Epoch AI

Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0

Questions

When was GPT-5.2 released?

OpenAI released GPT-5.2 on 11 December 2025.

Is GPT-5.2 still available?

Yes: it is generally available, as OpenAI states it.

What is the context window of GPT-5.2?

The context window of GPT-5.2 is 400,000 tokens, as OpenAI prints it.

How much does the GPT-5.2 API cost?

On the standard tier, GPT-5.2 costs $1.75 per 1M tokens for input and $14.00 per 1M tokens for output, as OpenAI lists it.

What is the knowledge cutoff of GPT-5.2?

The knowledge cutoff of GPT-5.2 is 31 August 2025.

More from OpenAI

Sources

  1. All models | OpenAI API (read 19 October 2026)
  2. GPT-5.2 Model | OpenAI API (read 19 October 2026)
  3. Introducing GPT-5.2 (read 19 October 2026)
  4. Deprecations | OpenAI API (read 19 October 2026)
  5. Update to GPT-5 System Card: GPT-5.2 (read 19 October 2026)

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