OpenAI
OpenAI: GPT-6 Luna
openai/gpt-6-luna-20260922
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...
OpenAI: GPT-6 Luna usage over time
OpenRouter share of tokens, by day.
OpenAI: GPT-6 Luna holds 5.21% today, up from 0.36% at the start of the visible window.
Rank history
Adoption curve vs the pantheon
OpenAI: GPT-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 2026-10-08, OpenAI: GPT-6 Luna holds 5.2% of OpenRouter token share, up 4.85pp over 30 days. Source: Tidelines (OpenRouter).
Cost per session
Median dollars spent on one OpenAI: GPT-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 | — | — | $0.035 | — |
| Codex | $0.0015 | $0.0060 | $0.035 | $0.317 |
| Claude Code | — | $0.0058 | $0.026 | $0.261 |
| Hermes Agent | $0.0011 | $0.0032 | $0.023 | $0.219 |
Where to run it
OpenAI: GPT-6 Luna pricing by provider
Per-provider pricing, context, and uptime via OpenRouter. Sorted by output price.
OpenAI: GPT-6 Luna is served by 6 tracked endpoints on OpenRouter. The cheapest output price is $0.25 per million tokens from OpenAI · 1050k, and the most expensive is $1.00 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 | $0.05 | $0.25 | 1050k | 100.00% |
| OpenAI · 1050k | $0.10 | $0.50 | 1050k | 100.00% |
| Azure · 1050k | $0.10 | $0.50 | 1050k | 100.00% |
| Azure · 1050k | $0.11 | $0.55 | 1050k | 100.00% |
| Amazon Bedrock | $0.11 | $0.55 | 1050k | 100.00% |
| OpenAI · 1050k | $0.20 | $1.00 | 1050k | 100.00% |