gpt-5.6-luna vs gpt-6-astra
Both can be used on onomeo. Everything below comes from calls made through this site.
- gpt-5.6-luna
- No edge in the figures
- gpt-6-astra
- No edge in the figures
How to choose
The figures from this site show no clear difference between the two yet.
gpt-5.6-luna
By OpenAI
gpt-6-astra
By OpenAI
Where they differ
gpt-5.6-lunagpt-6-astra
On this site
$1.80Reference price per million output tokens$75.00
$0.30Reference price per million input tokens$15.00
The model itself
Feb 2026Knowledge cutoffApr 2026
9 Jul 2026Released4 Sep 2026
$0.03Reference price per million cache-read tokens$1.50
Where they match
- Place in this week's rankingUnranked
- Context length1.1M tokens
- Longest reply128K tokens
- Reads imagesYes
- Calls toolsYes
- Thinks before answeringYes
- Conversations used for trainingUsed to train and improve the provider’s models
- Open weightsNo
Availability over 3 days counts every call made through the site; this week's availability counts every call over the last 7 days, scheduled tests included, and response time comes from the site's own scheduled tests. Models marked as free are counted in calls; paid models are charged by usage, in US dollars.
Compare next
gpt-5.6-luna against other models
- vs deepseek-flash$1.76Reference price per million output tokens
- vs deepseek-v4.1-flash-1017$2.25Reference price per million output tokens
- vs mimo-v2.6-pro$1.30Reference price per million output tokens
- vs glm-5.3-flash$0.75Reference price per million output tokens
- vs claude-haiku-5.5$0.75Reference price per million output tokens
- vs mistral-large-4$3.13Reference price per million output tokens
gpt-6-astra against other models
- vs claude-fable-5.1$75.00Reference price per million output tokens
- vs claude-fable-5.2$60.00Reference price per million output tokens
- vs claude-opus-5.5$30.00Reference price per million output tokens
- vs muse-wonder-1.0$30.00Reference price per million output tokens
- vs kimi-k3$22.50Reference price per million output tokens
- vs gemini-4-argon$15.00Reference price per million output tokens
Figures come from real calls made through this site. Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.