Model
gpt-5.6-terra
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- Models & capabilities 3
- Benchmarks & progress 1
- Security & misuse 1
OpenAI releases GPT-6.1 Terra, its cheaper mid-tier model
API prices of $1 and $5 per million input and output tokens; OpenAI reports 50.3% on Terminal-Bench 4.0 at maximum effort, against 21.5% for GPT-5.6 Terra.
Models & capabilities · Benchmarks & progress
OpenAI releases GPT-5.6
Released in three tiers — Sol, Terra and Luna — after a delayed rollout attributed to US government review, with OpenAI billing the flagship as its strongest cybersecurity model yet.
Models & capabilities · Security & misuse
OpenAI previews GPT-5.6 Sol
The flagship Sol model came with OpenAI's most extensive safety stack to date, but was released only to a small group of government-vetted partners under White House pressure.
Models & capabilities