GPT-5.6 Luna on Vidman AI
gpt-5.6-luna
Pricing
₹ per 1M tokens · as of 16 October 2026| Input | ₹19 |
| Output | ₹115 |
| Cached input | ₹1.92 |
| Cache write · 5 min | ₹24 |
Flat rate: every request bills the same. Rupee prices convert at the platform exchange rate billing uses (₹96/USD today). Full catalog and comparisons on the pricing comparison page.
About this model
OpenAI's GPT-5.6 model optimized for cost-sensitive, high-volume workloads, with configurable reasoning.
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Model specifications
API data- Modality
- Multimodal
- Context
- 2,72,000 tokens
- Maximum output
- 1,28,000 tokens
- Reasoning
- Optional
- Effort levels
- low, medium, high, xhigh, max
- Default effort
- medium
- Caching
- Automatic
- Cache minimum
- 1,024 tokens
- Cache TTL
- Provider managed
- Route
- Vidman AI managed
From the serverless catalog, fetched 16 October 2026.
Measured performance
API observations over 7d; not an SLA.
- TTFT p50
- 800 ms
- TTFT p95
- 12,000 ms
- Throughput p50
- 1 tok/s
- Throughput average
- 33.3 tok/s
curl https://api.vidman.ai/v1/chat/completions \
-H "x-api-key: $VIDMAN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5.6-luna",
"messages": [{ "role": "user", "content": "Hello" }]
}'Existing OpenAI SDK code works by changing the base URL to https://api.vidman.ai/v1 and the key.
Model card
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.
Model details
| Property | Value |
|---|---|
| Developer | OpenAI |
| Model ID | gpt-5.6-luna |
| OpenAI default snapshot | gpt-5.6-luna |
| Input | Text, image |
| Output | Text |
| Max output tokens | 128,000 |
| Knowledge cutoff | Feb 16, 2026 |
| Reasoning | Yes |
*Details above are from OpenAI's official model page.