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OpenAI
GPT-5.6 Luna fast
openai/gpt-5-6-luna
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
Input / 1M
$0.20
USD per million tokens
Output / 1M
$1.20
USD per million tokens
Est. cost / token
$0.00000045
$0.45 per 1M, 3:1 mix
Context window
922K
max output 128K
Major features
VisionBatchPDFCachingReasoningJSON schemaToolsWeb search
Task suitability (heuristic 1–5, not a benchmark)
- coding3
- reasoning3
- math3
- summarization4
- extraction4
- classification4
- chat3
- creative3
- translation4
- vision3
- long context4
- agentic3
Price history
| Recorded | Input | Output | Cached | Source |
|---|---|---|---|---|
| 2026-11-05 03:20 | $0.20 | $1.20 | $0.020 | litellm+openrouter |
A row is added whenever a sync detects a price change. Vendor pricing source
Pricing (USD per 1M tokens)
- Input
- $0.20
- Output
- $1.20
- Cached input
- $0.020
- Batch input
- $0.10
- Batch output
- $0.60
- Blended (3:1)
- $0.45
Details
- Company
- OpenAI
- Version
- 5.6
- Family
- GPT
- Released
- 2026-07-09
- Parameters
- Undisclosed
- Max output
- 128K
- Open weights
- No
- Inputs
- file, image, text
- Last synced
- 29 min ago