OpenAI
OpenAI: GPT-5.6 Luna
openai/gpt-5.6-luna-20260709
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...
OpenAI: GPT-5.6 Luna usage over time
OpenRouter share of tokens, by day.
OpenAI: GPT-5.6 Luna holds 10.88% today, up from 0.32% at the start of the visible window.
Rank history
Adoption curve vs the pantheon
OpenAI: GPT-5.6 Luna's share plotted against days since first tracked, overlaid on other current leaders on the same axis. The question every new-model page asks: is this one going to make it?
Citable stat
As of 2026-09-01, OpenAI: GPT-5.6 Luna holds 10.9% of OpenRouter token share, up 2.44pp over 30 days. Source: Tidelines (OpenRouter).
Cost per session
Median dollars spent on one OpenAI: GPT-5.6 Luna session, by coding agent and session length.
Token rate sets the price; session length and reasoning set the bill.
| Agent | 1 turn | 2–9 turns | 10–49 turns | 50+ turns |
|---|---|---|---|---|
| Kilo Code | $0.0019 | $0.011 | $0.047 | $0.372 |
| Hermes Agent | $0.0024 | $0.0075 | $0.037 | $0.279 |
| Codex | $0.0021 | $0.0063 | $0.032 | $0.209 |
| Claude Code | $0.0034 | $0.0078 | $0.032 | $0.236 |
Where to run it
OpenAI: GPT-5.6 Luna pricing by provider
Per-provider pricing, context, and uptime via OpenRouter. Sorted by output price.
OpenAI: GPT-5.6 Luna is served by 6 tracked endpoints on OpenRouter. The cheapest output price is $0.60 per million tokens from OpenAI · 1050k, and the most expensive is $2.40 from OpenAI · 1050k. The largest context window offered is 1050k tokens. Prices are list rates and refresh daily.
| Provider | Input $/M | Output $/M | Context | Uptime |
|---|---|---|---|---|
| OpenAI · 1050k | $0.10 | $0.60 | 1050k | 100.00% |
| Azure · 1050k | $0.20 | $1.20 | 1050k | 99.70% |
| OpenAI · 1050k | $0.20 | $1.20 | 1050k | 98.29% |
| Azure · 1050k | $0.22 | $1.32 | 1050k | 99.70% |
| Amazon Bedrock | $0.22 | $1.32 | 1050k | 99.98% |
| OpenAI · 1050k | $0.40 | $2.40 | 1050k | 99.99% |