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.
TOWARD DOOM40confidence 89/100
Why it moved the index
A verified flagship version improved adaptive reasoning and complex-task persistence while becoming the default across a massive consumer deployment.
AUDIT TRAIL
Assessment history
- R1Toward 40 · confidence 89
New exact flagship tiers and default deployment absent from durable context.
11 Aug 2026