GPT-6 Luna Pro pricing & price history
GPT-6 Luna Pro by OpenAI costs $0.10 per 1M input tokens and $0.50 per 1M output tokens, with a 1.1M token context window. The cheapest provider currently charges $0.05 input / $0.25 output.
Price history
No price changes since tracking began on 2026-09-24. We check every 10 minutes.
Which platform runs GPT-6 Luna Pro most reliably
2 platformsBy 30-day real-traffic success rate, Azure is the most stable; OpenAI is the cheapest.
| Platform | Last 30 days | Stability | 24 h | 30 min | |
|---|---|---|---|---|---|
| Azure most stable | Consistently stableavg 99.98% | 100% | 100% | ||
| OpenAI official | Consistently stableavg 99.97% | 100% | 100% |
Success rates come from real API traffic routed to each platform (public OpenRouter data), not our probes; each daily bar is the average of that day's samples. Green ≥ 99.5 %, yellow ≥ 97 %, orange ≥ 90 %, red < 90 %. Updated 28m ago.
Cost calculator
Cheaper alternatives to GPT-6 Luna Pro
| Model | Input | Output | Context | Intel. | |
|---|---|---|---|---|---|
 GLM 5.3 Flash Z.ai (Zhipu) | $0.0399 | $0.0784 | 1M | 27.8 | compare |
 DeepSeek V4.1 Flash DeepSeek | $0.022 | $0.40 | 1M | — | compare |
DeepSeek V4.1 Flash 1017 DeepSeek | $0.098 | $0.29 | 1M | 28.6 | compare |
 Llama 4 Scout Meta Llama | $0.10 | $0.30 | 1.3M | — | compare |
 MiMo-V2.6-Flash Xiaomi | $0.14 | $0.28 | 1.1M | 26.7 | compare |
Llama Guard 4 12B Meta Llama | $0.18 | $0.18 | 164K | — | compare |
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About GPT-6 Luna Pro
GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...
FAQ
How much does GPT-6 Luna Pro cost?
GPT-6 Luna Pro by OpenAI costs $0.10 per 1M input tokens and $0.50 per 1M output tokens, with a 1.1M token context window. The cheapest provider currently charges $0.05 input / $0.25 output. A typical request with 2,000 input and 500 output tokens costs about $0.0004.
What is the context window of GPT-6 Luna Pro?
GPT-6 Luna Pro supports up to 1,050,000 tokens of context and up to 128,000 output tokens per request.
Has GPT-6 Luna Pro’s price changed?
No price changes recorded since ModelBank started tracking it on 2026-09-24.
Is GPT-6 Luna Pro being deprecated?
No retirement date has been announced for GPT-6 Luna Pro as of 2026-11-12.
What are cheaper alternatives to GPT-6 Luna Pro?
Cheaper options include GLM 5.3 Flash ($0.0399/$0.0784), DeepSeek V4.1 Flash ($0.022/$0.40), DeepSeek V4.1 Flash 1017 ($0.098/$0.29), Llama 4 Scout ($0.10/$0.30).