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OpenAI releases GPT-6 Sol and GPT-6 Luna reasoning models

OpenAI released two reasoning models, GPT-6 Sol and GPT-6 Luna, in the Responses and Chat Completions APIs.

Models:gpt-6-solgpt-6-luna

What changed

OpenAI released GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna). Both are reasoning models that accept text and image inputs and generate text. Both work through the Responses and Chat Completions APIs. For prompts with up to 272K input tokens, GPT-6 Sol costs $2 input, $0.20 cached input and $10 output per 1M tokens. GPT-6 Luna costs $0.10 input, $0.01 cached input and $0.50 output per 1M tokens.

What it means for Zabio customers

Zabio offers some OpenAI models, but GPT-6 Sol and GPT-6 Luna are not in the Zabio catalog. You cannot call or route to these two models through Zabio.

What Zabio does

Catalog change under review. Not in the Zabio catalog yet: gpt-6-sol, gpt-6-luna.

Source

GPT-6 Sol: $2 input, $0.20 cached input, and $10 output.

Original announcement: OpenAI API changelog

Published automatically from the official announcement. Reviewed by a person within the day.

Source: OpenAI API changelog (2026-09-22)