GPT-6 Luna
OpenAI · Sep 22, 2026
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and…
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...
openai/gpt-5.6-terraGPT-5.6 Terra is an API model from OpenAI, released on Jul 9, 2026, with a context window of 1,050,000 tokens, pricing of $2 per million input tokens and $12 per million output tokens. It accepts file, image, text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.032.
Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.
GPT-5.6 Terra supports a context window of 1,050,000 tokens.
GPT-5.6 Terra is listed at $2 per million input tokens and $12 per million output tokens on OpenRouter.
GPT-5.6 Terra was published on Jul 9, 2026.
GPT-5.6 Terra accepts file, image, text input and produces text output.