GPT-5.6 Luna: release date and what it's for
Released , according to OpenAI's announcement. Twenty cents a million in. GPT-6 Luna does the same bulk jobs for half that, so there's little reason to start here now.
- Status
- Live
- Released
- Lab
- OpenAI
- Input
- $0.20per million tokens
- Output
- $1.20per million tokens
- Context window
- 1.05Mtokens
- Max output
- 128Ktokens
API model ID: gpt-5.6-luna
What we've written about GPT-5.6 Luna
Codex models and plans explained: GPT-6 Astra, Sol and Luna, and which plan gets which
Pick any GPT-6 model you like on your laptop, but a Codex cloud task on a ChatGPT plan still runs on last generation's Sol.
OpenAI model release dates: o3, GPT-5.5 and GPT-6 Astra, Sol and Luna in order
o3 is from April 2025, and the name Sol now means something different from what it meant in July.
How GPT-5.6 Luna compares on price and context
inputoutput
- GPT-6 Astra$10 / $50
- Claude Fable 5.1$10 / $50
- GPT-6 Sol$2 / $10
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
- GPT-5.6 Luna$0.20 / $1.20
- GPT-6 Luna$0.10 / $0.50
how much it reads at once
- GPT-5.6 Luna1.05M
- GPT-6 Sol1.05M
- GPT-6 Luna1.05M
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Claude Fable 5.11M
Next to the newest OpenAI models and the current model from other labs. Prices are in US dollars per million tokens.
What is GPT-5.6 Luna?
GPT-5.6 Luna is a model from OpenAI, built in the US. It's out, and you can use it today.
When did GPT-5.6 Luna come out?
OpenAI released it on July 9, 2026. That date comes from OpenAI's announcement.
More from OpenAI
GPT-6 Sol
- in /1M
- $2
- out /1M
- $10
- context
- 1.05M
GPT-6 Luna
- in /1M
- $0.10
- out /1M
- $0.50
- context
- 1.05M
GPT-6 Astra
- in /1M
- $10
- out /1M
- $50
- context
- 1.05M
GPT-5.6 Sol
- in /1M
- $4
- out /1M
- $20
- context
- 1.05M
GPT-5.5 Pro
- in /1M
- $30
- out /1M
- $180
- context
- 1.05M
GPT-5.5
- in /1M
- $5
- out /1M
- $30
- context
- 1.05M
GPT-5.4 nano
- in /1M
- $0.20
- out /1M
- $1.25
- context
- 400K
GPT-5.4 Mini
- in /1M
- $0.75
- out /1M
- $4.50
- context
- 400K
More news: OpenAI news and ChatGPT updates
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