GPT 5.6 Luna
OpenAI · text, image → text
GPT-5.6 Luna is designed for cost-sensitive, high-volume workloads. It roughly corresponds to the nano model tier used in earlier GPT-5 families.
Input$0.2 /M
Output$1.2 /M
Cache read$0.02 /M
← ModelsGPT 5.6 LunaO1 Pro
GPT 5.6 Luna vs O1 Pro
Compare GPT 5.6 Luna from OpenAI and O1 Pro from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GPT 5.6 LunaO1 Pro+ Add model · 2/4
O1 Pro
OpenAI · text → text
The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide consistently better answers.
Input$170 /M
Output$680 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.6 Luna
O1 Pro
Input /M
$0.2
$170
Output /M
$1.2
$680
Cache read /M
$0.02
-
Context length
1,050,000
NaN
Max output
128,000
0
Time to First Token
5.1 s
96.0 s
Throughput
47.6 tok/s
19.0 tok/s
Modalities
textimage
text
Supported Parameters
toolsthinkingstructured outputs
thinking
API Formats
chat_completions · responses
Released
July 9, 2026
March 19, 2025
Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
gpt-5.6-lunao1-pro
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
gpt-5.6-lunao1-pro
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
Cost calculator
Estimate your monthly bill for the same workload on each model.
GPT 5.6 Luna
$30.00 /mo
O1 Pro
$20,400 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5.6 Luna, O1 Pro?
GPT 5.6 Luna: $1.2/M output tokens; O1 Pro: $680/M. Use the cost calculator above to estimate your own workload.
Which responds faster?
GPT 5.6 Luna: 5.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Which one generates tokens faster?
GPT 5.6 Luna at 47.6 tok/s and O1 Pro at 19.0 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
GPT 5.6 Luna accepts text and image input and supports tool calling, thinking and structured outputs; O1 Pro accepts text input and supports thinking.
Can I call GPT 5.6 Luna and O1 Pro with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
Popular comparisons
Related model match-ups readers also look at.
