GPT-6 Luna

by OpenAIChat

OpenAI's most efficient model for focused, high-volume tasks

Context
1.05M tokens
Max output
128,000 tokens
Released
2026-09-22
Weights
Closed

Feed

openai/gpt-6-luna · also seen as duo-chat-gpt-6-luna, us.openai.gpt-6-luna, global.openai.gpt-6-luna, gpt-6-luna@eu, +8 more

Specifications

Full facts as recorded, incl. what is unknown.

Released
2026-09-22
Weights
Closed
Input
Text, Image, PDF
Output
Text
Context window
1,050,000 max across endpoints
Max output
128,000
Providers
18 + 21 gateways, not counted as providers
Epoch Capabilities Index
156.3 ± 2.4 against price
Direct price range
$0.10–$0.13 in · $0.50–$0.65 out per 1M tokens · 16 of 18 providers have a comparable price
More details
Last updated
2026-09-22
Knowledge cutoff
2026-05-18
Developer country
United States of America

Capabilities

Across all endpoints: supported if any endpoint supports it.

  • Tool calling
  • Parallel tools
  • Structured output
  • Reasoning
  • Image input
  • PDF input
  • Audio input
  • Audio outputunknown
  • Video input
  • Prompt caching
  • Web search
  • Computer use
  • System messages
  • Assistant prefillunknown
  • Temperature
  • Streaming
  • Attachments

Endpoints

One row per provider and variant; gateways are listed separately.

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Price history

Atom feed

No change since 19 Oct 2026. The cheapest direct price has been $0.10 in / $0.50 out per 1M tokens at OpenAI on every data refresh since then.

Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON

Cost calculator

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Similarly priced models

Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).

ModelBlended/1MIn/1MOut/1MContextvs GPT-6 Luna
Claude Haiku LatestAnthropic$0.167$0.10$0.501M+0%
Claude Haiku 5.5Anthropic$0.167$0.10$0.501M+0%
GPT-6 Luna ProOpenAI$0.167$0.10$0.501.05M+0%
GPT Luna LatestOpenAI$0.167$0.10$0.501.05M+0%
Trendyol Asure 12BTrendyol$0.167$0.10$0.5041K+0%
mistral-7b-instruct-v0.2Mistral AI$0.169$0.159$0.21932.8K+1%
Voxtral SmallMistral AI$0.164$0.123$0.36832.8K−2% cheaper
DeepSeek V4 Flash Vision ExpDeepSeek$0.163$0.14$0.281.05M−2% cheaper

More from OpenAI

Newest OpenAI models in the catalogue. All OpenAI models

ModelReleasedContextListed price
GPT-6.1 Sol Ultrafast2026-10-081.05Mfrom $12
GPT-6 Luna Decisions2026-10-061.05Munpriced
GPT-6.1 Sol2026-09-291.05Mfrom $2.00
GPT-6.1 Sol Pro2026-09-291.05Mfrom $2.00
GPT-6 Sol2026-09-221.05Mfrom $2.00
GPT-6 Sol Pro2026-09-221.05Mfrom $2.00
GPT-6 Luna Pro2026-09-221.05Mfrom $0.10
GPT Luna Latest2026-09-111.05M$0.10 via NanoGPT
Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model