OpenAI releases GPT-5.2
Partly confirmed
The takeaway
OpenAI released GPT-5.2 in Instant, Thinking and Pro variants, about three weeks after Gemini 3, reportedly accelerated by an internal ‘code red’; it targeted professional knowledge work such as spreadsheets, presentations and long-running multi-step tasks.
Status
- Claim
Partly confirmed
- Our reporting
- Medium confidence
- Importance
- 3 of 5
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 AstraIn its training data
- Claude Opus 5.5In its training data
- Gemini 4 HydrogenIn its training data
- Grok 4.7In its training data
It happened before the cutoffs of all four assistants, so it can be in their training data.
Key facts
- Released 11 December 2025
- Variants: GPT-5.2 Instant, Thinking and Pro; GPT-5.2-Codex followed
- 400K-token context window
- API price $1.75 per million input tokens
- Succeeded GPT-5.1 (November 2025)
What happened
OpenAI shipped a rapid point release of GPT-5 focused on professional tasks and agentic reliability.
Why it matters
Illustrated the compressed release cadence of late 2025, with frontier leadership changing hands within weeks.
Sources
2 sources from 1 site. Numbers match the chips in the text.
2 sources: 2 primary
Primary
- Introducing GPT-5.2 (OpenAI)openai.com, official
- Update to GPT-5 System Card: GPT-5.2 (OpenAI)openai.com, docs
Changes
- Filed