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OpenAI: 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...

Developer
openai
Input modalities
file, image, text
Output modalities
text
Context tokens
1,050,000
Latest price observation
2026-09-28
Lowest paired standard token quote
$2.00 input / $12.00 output per 1M tokens

Dated price and provider records

Provider and channelInputOutput or native rateUnit and statusSource and observation
Automatic routingopenrouter$2.00$12.001M tokenspriced · USDopenrouter2026-09-28

These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.