OpenAI releases GPT-5.6 Terra

GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...

Type: MODEL_LAUNCH
Detection: benchmark
Confidence: high
Status

Related entities

ModelGPT-5.6 Terra CompanyOpenAI

Primary source

Epoch AI Benchmarking Hub · epoch.ai/benchmarks/eci ↗

Independent benchmark runs (GPQA Diamond, SWE-bench Verified, FrontierMath, ...) plus externally reported leaderboards and the Epoch Capabilities Index (ECI).

Related events

Benchmark19d ago
Epoch AI evaluates GPT-5.6 Terra
Epoch AI Benchmarking HubGPT-5.6 Terra OpenAI