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 Luna
Kimi K2 Turbo Preview
GPT 5.6 Luna vs Kimi K2 Turbo Preview
Compare GPT 5.6 Luna from OpenAI and Kimi K2 Turbo Preview from Moonshot AI 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 LunaKimi K2 Turbo Preview+ Add model · 2/4
Kimi K2 Turbo Preview
Moonshot AI · text → text
The kimi-k2-turbo-preview model is a high-speed version of kimi-k2, with the same model parameters as kimi-k2, but the output speed has been increased from 10 tokens per second to 40 tokens per second.
Input$1.2 /M
Output$4.8 /M
Cache read$0.3 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.6 Luna
Kimi K2 Turbo Preview
Input /M
$0.2
$1.2
Output /M
$1.2
$4.8
Cache read /M
$0.02
$0.3
Context length
1,050,000
262,144
Max output
128,000
8,192
Time to First Token
5.1 s
3.1 s
Throughput
47.6 tok/s
19.7 tok/s
Modalities
textimage
text
Supported Parameters
toolsthinkingstructured outputs
toolsfunction callingstructured outputs
API Formats
chat_completions · responses
Released
July 9, 2026
July 8, 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-lunakimi-k2-turbo-preview
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-lunakimi-k2-turbo-preview
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
Kimi K2 Turbo Preview
$144 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5.6 Luna, Kimi K2 Turbo Preview?
GPT 5.6 Luna: $1.2/M output tokens; Kimi K2 Turbo Preview: $4.8/M. Use the cost calculator above to estimate your own workload.
Which responds faster?
Kimi K2 Turbo Preview: 3.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
GPT 5.6 Luna accepts 1,050,000 and Kimi K2 Turbo Preview accepts 262,144 input tokens. Maximum output per request is 128,000 tokens on GPT 5.6 Luna and 8,192 tokens on Kimi K2 Turbo Preview.
Which one generates tokens faster?
GPT 5.6 Luna at 47.6 tok/s and Kimi K2 Turbo Preview at 19.7 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; Kimi K2 Turbo Preview accepts text input and supports tool calling, function calling and structured outputs.
Can I call GPT 5.6 Luna and Kimi K2 Turbo Preview 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.
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