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GPT-5.6 Luna (batch) API pricing

GPT-5.6 Luna (batch) is OpenAI’s model on the API market, released 9 Jul 2026. Prices are per million tokens in USD, as last read from the price list.

$0.10Input / 1M
$0.60Output / 1M
1.1MContext
128KMax output

This is a variant of GPT-5.6 Luna at a different price.

Specification
USD per million tokens
Provider
OpenAI
Model id
openai/gpt-5.6-luna:batch
Input
$0.10
Output
$0.60
Cached input
$0.010
Context window
1.1M tokens
Maximum output
128K tokens
Takes
file, image, text
Returns
text
Tool use
Yes
Reasoning
Yes
Released
9 Jul 2026
First tracked
17 Sept 2026

At $0.10 per million input tokens, GPT-5.6 Luna (batch) is dearer than 53 of the 326 models on the price list.

Price changes
Tracked since 17 Sept 2026

No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.

Other entries for this model
More from OpenAI
Cheapest input first
  1. gpt-oss-20b$0.030 in · $0.13 out
  2. gpt-oss-120b$0.037 in · $0.17 out
  3. GPT-5 Nano$0.050 in · $0.40 out
  4. gpt-oss-safeguard-20b$0.075 in · $0.30 out
  5. GPT-4.1 Nano$0.10 in · $0.40 out
  6. GPT-4o-mini$0.15 in · $0.60 out
  7. GPT-4o-mini (2024-07-18)$0.15 in · $0.60 out
  8. GPT-5.6 Luna Pro$0.20 in · $1.20 out

Prices and specifications come from OpenRouter’s catalogue, last read 17 Sept 2026. A provider’s own price may differ; how this is collected.