OpenAI
GPT-5.2
Announced Dec 11, 2025
Documents, spreadsheets and complex projects
What could it do?
OpenAI reported improvements in knowledge work, long context, coding and tool use.
What changed?
A new GPT-5 generation focused on professional tasks.
Expanded the range of work an assistant could help produce.
Where it fell short
This is a model series; Thinking and other configurations must be evaluated separately.
Release facts were checked against the sources below. Performance claims belong to the developers; we have not independently tested these models.
Developer announcement or release logBenchmark results
A benchmark estimate, not a percentage or capability multiplier. Reasoning settings are not specified in this source table. Historical estimates can change in later snapshots.
Epoch AI methodology ↗Download the source snapshotChecked Oct 7, 2026 · CC BY 4.0One explicitly named variant per release. Scores come from the same Overall snapshot; preliminary entries and reported intervals are preserved. These are current ratings of earlier variants, not their launch day ratings.
Source: Text Arena ↗Download selected resultsChecked Oct 8, 2026Only mini-SWE-agent v2.0.0 submissions, one run per model. Reasoning effort varies and is labelled. These are published submissions, not a rerun by Leapscope. Latest included release: February 5, 2026; latest run: February 26, 2026.
Source: SWE bench Verified ↗Download selected resultsChecked Oct 8, 2026