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GPT 5.6 Luna

GPT-5.6 Luna is a fast, affordable GPT-5.6 model that brings strong capability at the lowest cost in the series. Your use subject to OpenAI's Terms & Privacy Policies.

ReasoningFile InputTool UseVision (Image)Implicit CachingWeb SearchWebsockets
import { streamText } from 'ai'
const result = streamText({
model: 'openai/gpt-5.6-luna',
prompt: 'Why is the sky blue?'
})
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Providers

Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.

Provider
Context
Max Output
Latency
Throughput
Input
Output
Cache
Web Search
Capabilities
ZDR
No Training
Regional Inference
Release Date
OpenAI
80% off
Legal:TermsPrivacy
1.1M128K
2.3s
130tps
$1/M$0.20/M
+2 more
$6/M$1.20/M
+2 more
Read:$0.1/M$0.02/M+2 more
Write:$1.25/M$0.25/M+2 more
$10/K
+ input costs
+4
US
07/09/2026
1.1M128K
1.6s
67tps
$1/M+1 more
$6/M+1 more
Read:
$0.1/M+1 more
Write:
$1.25/M+1 more
$14/K
+ input costs
+3
07/09/2026
Bedrock
80% off
Legal:TermsPrivacy
272K272K
3.2s
84tps
$1.10/M$0.22/M
+1 more
$6.60/M$1.32/M
+1 more
Read:
$0.11/M$0.02/M+1 more
Write:
$1.38/M$0.28/M+1 more
$10/K
+ input costs
+3
07/09/2026