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
Nemotron 3.5 Content Safety (free)
GPT 5.6 Luna vs Nemotron 3.5 Content Safety (free)
Compare GPT 5.6 Luna from OpenAI and Nemotron 3.5 Content Safety (free) from Nvidia 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 LunaNemotron 3.5 Content Safety (free)+ Add model · 2/4
Nemotron 3.5 Content Safety (free)
Nvidia · text, image → text
NVIDIA Nemotron 3.5 Content Safety is a compact 4B-parameter multimodal guardrail model fine-tuned from Google Gemma-3-4B. Featuring a 128,000 token context length, it is designed to moderate both inputs to and responses from LLMs and VLMs. This model provides an efficient safety layer to filter content and secure interactions across multiple modalities.
Input$0 /M
Output$0 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.6 Luna
Nemotron 3.5 Content Safety (free)
Input /M
$1
$0
Output /M
$6
$0
Cache read /M
$0.1
-
Context length
1,050,000
131,072
Max output
128,000
0
Time to First Token
2.2 s
-
Throughput
88.4 tok/s
-
Modalities
textimage
textimage
Supported Parameters
toolsthinkingstructured outputs
reasoninglong context
API Formats
chat_completions · responses
chat_completions
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-lunanemotron-3.5-content-safety-free
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-lunanemotron-3.5-content-safety-free
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
Cost calculator
Estimate your monthly bill for the same workload on each model.
Nemotron 3.5 Content Safety (free)
$0.00 /mo
GPT 5.6 Luna
$150 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
How large is each context window?
GPT 5.6 Luna accepts 1,050,000 and Nemotron 3.5 Content Safety (free) accepts 131,072 input tokens.
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; Nemotron 3.5 Content Safety (free) accepts text and image input and supports reasoning and long context.
Can I call GPT 5.6 Luna and Nemotron 3.5 Content Safety (free) 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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