GPT 5.6 Luna Pro

OpenAI · model · context window 1,050,000 tokens.

Pricing (per 1M tokens)

Input$0.2000

Output$1.20

Cache read$0.0200

Cache write$0.2500

Specifications

Context window1,050,000 tokens

Max output128,000 tokens

Modalitiestext

VisionNo

Tool useYes

ReasoningNo

Prompt cachingNo

Price history

All price changes →

GPT 5.6 Luna Pro has had 4 tracked price changes since we began monitoring. Most recent: input $0.1000 → $0.2000 on 29 August 2026. All-time low input rate: $0.1000/1M.

Input price over time ($/1M tokens)

Low $0.100High $0.200

Recorded from our daily pricing checks. See the full LLM price tracker.

Estimate cost with GPT 5.6 Luna Pro

GPT 5.6 Luna Pro is pre-selected below. Enter your token counts and volume to see the cost per request, per day and per month — then switch models to compare.

Model

Input tokens(tokens)

Output tokens(tokens)

Results update automatically as you type.

Result

$0.000800 per request

~$24.00/month at 1,000 requests/day

Input cost: $0.000200
Output cost: $0.000600
Per request: $0.000800
Per day: $0.8000
Per month: $24.00

Chatbot Cost Calculator Compare all models

Source: community-hosted (cheapest of 4 providers, nano-gpt via models.dev). Prices are re-checked daily against the provider’s official pricing; this rate was last changed on 11 October 2026. A recent date here just means the price is still current, not that it moved.