GPT-5.6 Luna

Capabilities

Context Window

272,000 tokens

Max Output

128,000 tokens

Knowledge Cutoff

February 16, 2026

Modalities

Input: text, image

Output: text

Latency

634 ms

Median time to first token over the last 30 days (212 samples).

Pricing Details

Compare to other OpenAI models

• GPT-4.1
  $2.00 / $8.00 per M tokens
• GPT-4.1 Mini
  $0.40 / $1.60 per M tokens
• gpt-4o
  $2.50 / $10.00 per M tokens
• GPT-4o Mini
  $0.15 / $0.60 per M tokens
• GPT-5.4
  $2.50 / $15.00 per M tokens
• GPT-5.4 Mini
  $0.75 / $4.50 per M tokens