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Models

ChatGPT API for Frontier GPT 5.6 Reasoning — 5 variants

Clear family filter

ProviderAll fal.ai Replicate Atlas Cloud OpenRouter

GPT 5.4

chat

OPENAI

Replicate$2.50/$15.00 /1M tok

Atlas Cloud$2.50/$15.00 /1M tok

OpenRouter$2.50/$15.00 /1M tok

GPT 5.6 Luna

chat

OPENAI

Replicate$1.00/$6.00 /1M tok

Atlas Cloud$1.00/$6.00 /1M tok

OpenRouter$0.200/$1.20 /1M tok

GPT 5.6 Sol

chat

OPENAI

Replicate$2.00/$10.00 /1M tok

Atlas Cloud$5.00/$30.00 /1M tok

OpenRouter$2.00/$10.00 /1M tok

GPT 5.6 Terra

chat

OPENAI

Replicate$2.50/$15.00 /1M tok

Atlas Cloud$2.50/$15.00 /1M tok

OpenRouter$2.00/$12.00 /1M tok

GPT 5.5

chat

OPENAI

Atlas Cloud$5.00/$30.00 /1M tok

OpenRouter$5.00/$30.00 /1M tok