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$1 /M
Output$6 /M
Cache read$0.1 /M
← ModelsGPT 5.6 Luna
moonshotai/kimi-k2-instruct
GPT 5.6 Luna vs moonshotai/kimi-k2-instruct
Compare GPT 5.6 Luna from OpenAI and moonshotai/kimi-k2-instruct 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 Lunamoonshotai/kimi-k2-instruct+ Add model · 2/4
moonshotai/kimi-k2-instruct
Moonshot AI · text → text
Kimi K2 is Moonshot AI's state-of-the-art Mixture-of-Experts (MoE) language model with 1 trillion total parameters and 32 billion activated parameters. Designed for agentic intelligence, it excels at tool use, coding, and autonomous problem-solving across diverse domains.
Input$0.62 /M
Output$2.48 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.6 Luna
moonshotai/kimi-k2-instruct
Input /M
$1
$0.62
Output /M
$6
$2.48
Cache read /M
$0.1
-
Context length
1,050,000
NaN
Max output
128,000
0
Time to First Token
2.2 s
-
Throughput
88.4 tok/s
-
Modalities
textimage
text
Supported Parameters
toolsthinkingstructured outputs
toolsfunction callingstructured outputs
API Formats
chat_completions · responses
Released
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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-lunamoonshotai/kimi-k2-instruct
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-lunamoonshotai/kimi-k2-instruct
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
Cost calculator
Estimate your monthly bill for the same workload on each model.
moonshotai/kimi-k2-instruct
$74.40 /mo
GPT 5.6 Luna
$150 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5.6 Luna, moonshotai/kimi-k2-instruct?
moonshotai/kimi-k2-instruct: $2.48/M output tokens; GPT 5.6 Luna: $6/M. Use the cost calculator above to estimate your own workload.
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; moonshotai/kimi-k2-instruct accepts text input and supports tool calling, function calling and structured outputs.
Can I call GPT 5.6 Luna and moonshotai/kimi-k2-instruct 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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