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
Grok 2 Vision 1212
GPT 5.6 Luna vs Grok 2 Vision 1212
Compare GPT 5.6 Luna from OpenAI and Grok 2 Vision 1212 from Grok 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 LunaGrok 2 Vision 1212+ Add model · 2/4
Grok 2 Vision 1212
Grok · text, image → text
grok-2-vision-1212 is the latest vision model in the Grok family, delivering outstanding performance on vision-based tasks and achieving state-of-the-art results in visual mathematical reasoning and document-based question answering. It supports a wide range of visual inputs, including documents, charts, screenshots, and real-world images, making it well-suited for advanced visual understanding and reasoning use cases. The price of calling this model in AIhubMix is 10% lower than on the official website.
Input$1.8 /M
Output$9 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.6 Luna
Grok 2 Vision 1212
Input /M
$0.2
$1.8
Output /M
$1.2
$9
Cache read /M
$0.02
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Context length
1,050,000
0
Max output
128,000
0
Time to First Token
5.0 s
-
Throughput
47.6 tok/s
-
Modalities
textimage
textimage
Supported Parameters
toolsthinkingstructured outputs
API Formats
chat_completions · responses
Released
July 9, 2026
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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-lunagrok-2-vision-1212
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-lunagrok-2-vision-1212
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
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Cost calculator
Estimate your monthly bill for the same workload on each model.
GPT 5.6 Luna
$30.00 /mo
Grok 2 Vision 1212
$243 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5.6 Luna, Grok 2 Vision 1212?
GPT 5.6 Luna: $1.2/M output tokens; Grok 2 Vision 1212: $9/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; Grok 2 Vision 1212 accepts text and image input.
Can I call GPT 5.6 Luna and Grok 2 Vision 1212 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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