Back to GPT-5.6 Luna pricing
GPT-5.6 Luna price history
Every tracked change to GPT-5.6 Luna token pricing on the OpenAI API — input, output, and cached-input rates per million tokens. Data goes back to July 12, 2026.
Price per million tokens
Price change events
| Date | Direction | Input | Output | Notes |
|---|---|---|---|---|
| July 30, 2026 | Decrease | $1 → $0.2/M (−$0.8) | $6 → $1.2/M (−$4.8) | OpenAI cut GPT-5.6 Luna API pricing by 80% on July 30, 2026. Input $1.00 → $0.20/M tokens, Output $6.00 → $1.20/M tokens, Cache Read $0.10 → $0.02/M tokens. Sources: unite.ai/openai-cuts-api-prices-on-its-two-cheaper-gpt-5-6-tiers/, aipricing.guru/openai-pricing/. Context: OpenAI facing competitive pressure from cheaper Chinese open-source models (per CNBC coverage). Same day, OpenAI also introduced Fast Mode (2x speed at premium pricing) and hard spend-limit controls for API orgs (rolled out July 22). Flagship Sol pricing unchanged. |
Full snapshot log
| Snapshot date | Input / 1M | Output / 1M | Cached input / 1M |
|---|---|---|---|
| July 30, 2026 | $0.2 | $1.2 | $0.02 |
| July 13, 2026 | $1 | $6 | $0.1 |
| July 12, 2026 | $1 | $6 | $0.1 |