GPT-5.1 Instant
The fast GPT-5.1 tier with adaptive reasoning and default ChatGPT distribution.
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Why this model scores 71.6
Adaptive reasoning raises capability and some autonomy; default global ChatGPT access maximizes deployment while published safeguards moderate misuse and control difficulty.
News tied to GPT-5.1 Instant
The model score of 71.6 rates this model's risk profile. The overall Doom Index of 67.9 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
GPT-5.1 becomes ChatGPT's adaptive default across Instant and Thinking tiers
OpenAI released GPT-5.1 Instant and GPT-5.1 Thinking, adding adaptive reasoning and making the new generation ChatGPT's default model family.
- Full item contribution
- +0.17
- GPT-5.1 Instant equal share
- +0.08
Model score history
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R3
Doom Score 71.6
Source-backed model availability audit using the model's existing primary or authoritative catalogue evidence. Exact-version evidence chronology replayed under temporal-monthly-pressure-v4.
12 Aug 2026 -
R2
Doom Score 71.6
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R1
Doom Score 71.4
New exact flagship tier absent from the durable catalogue.
11 Aug 2026