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GPT-5.6 Luna

OpenAI GPT-5

ActiveReleased 2026-06-10
ChatJSON modePrompt cachingReasoningStreamingTool callingVision
1.1M
Context window
Yes
Reasoning support
Yes
Tool calling

Pricing

Input
$0.2/M
Output
$1.20/M
Cached input
$0.02/M

Shown for OpenAI, the primary provider surface for this model. Pricing is Cloptima's known static list pricing; live/negotiated rates may differ.

Available via 2 providers

OpenAI
Gateway-routable
gpt-5.6-luna
1.1M context$0.2/$1.20 per M tokens
ChatJSON modePrompt cachingReasoningStreamingTool callingVision
Azure OpenAI
Gateway-routable
gpt-5.6-luna
1.1M context$0.2/$1.20 per M tokens
ChatJSON modePrompt cachingReasoningStreamingTool callingVision