OpenAI: GPT-5.2-Instant
GPT-5.2-Instant is a language model from OpenAI released on Dec 11, 2025. It reads text and images and writes text, with a 128K token context window and up to 16K tokens per reply.
Show moreShow less
It costs $1.60 per million input tokens and $13 per million output tokens. Cached input bills at $0.16, 90% less than fresh input.
It supports tool calling and prompt caching.
- Modalities
- In / out price
- $1.60 / $13 per 1M
- Context
- 128K
- Max output
- 16K
- Released
- Dec 11, 2025
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
GPT-5.2-Instant pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $1.60 / 1M tokens | |
|---|---|---|
| Output | $13 / 1M tokens | |
| Cached input (read) | $0.16 / 1M tokens | 90% off input |
What GPT-5.2-Instant costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call GPT-5.2-Instant through an OpenAI compatible API.
- Tools
tools
Alternatives to GPT-5.2-Instant
Models that take the same inputs and call tools, closest in price, cheaper ones first.
- Index 51.8
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 29, 20261.05M context$2/M input tokens$10/M output tokens27 providers
- Index 56
Reads text, images and files. Tool calling, structured output, reasoning. Served by 26 providers.
by anthropicSep 26, 20261M context$2/M input tokens$10/M output tokens26 providers
- 1.05M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 22, 2026$2/M input tokens$10/M output tokens27 providers
- 1M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 38 providers.
by anthropicJun 29, 2026$2/M input tokens$10/M output tokens38 providers
- 1.05M context
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 30 providers.
by googleFeb 5, 2025$1.25/M input tokens$10/M output tokens30 providers
- Index 25.8
Reads text, images and video. Tool calling, structured output, reasoning. Served by 48 providers.
by moonshotaiJun 12, 2026262K context$1.90/M input tokens$8/M output tokens48 providers
More from OpenAI
- Index 51.8
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 29, 20261.05M context$2/M input tokens$10/M output tokens27 providers
- 1.05M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 2 providers.
by openaiSep 29, 2026$2/M input tokens$10/M output tokens2 providers
- Index 38.1
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 22, 20261.05M context$0.10/M input tokens$0.50/M output tokens27 providers
- 1.05M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 2 providers.
by openaiSep 22, 2026$0.10/M input tokens$0.50/M output tokens2 providers
- 1.05M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 22, 2026$2/M input tokens$10/M output tokens27 providers
- 1.05M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 2 providers.
by openaiSep 22, 2026$2/M input tokens$10/M output tokens2 providers
GPT-5.2-Instant questions
How much does the GPT-5.2-Instant API cost?
$1.60 per million input tokens and $13 per million output tokens, with cached input at $0.16. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of GPT-5.2-Instant?
128,000 tokens of input, and it can write up to 16,384 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does GPT-5.2-Instant support tool calling?
Yes. It accepts tool definitions, which is what an agent needs to call your APIs.
Is GPT-5.2-Instant open source?
No. OpenAI serves it through an API only, so you cannot download the weights or host it yourself.
When was GPT-5.2-Instant released?
Dec 11, 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on GPT-5.2-Instant?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
Book Meeting