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...

• Context window: 1,050,000 tokens
• Input: file, image, text
• Output: text
• Pricing: $2.5/M input tokens, $15/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.