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OpenAI: GPT-6 Luna API Pricing
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...
How much does OpenAI: GPT-6 Luna cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-6 Luna costs about $2 ($1 input + $1 output). Try your own volumes in the cost calculator.
What is the official OpenAI: GPT-6 Luna price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $0.1 | $0.1 |
| Output /1M | $0.5 | $0.5 |
| Cached input /1M | $0.01 | $0.01 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
What are cheaper alternatives to OpenAI: GPT-6 Luna?
- PrismML: Ternary Bonsai 2 27B — $0.075 in / $0.5 out per 1M
- DeepSeek: DeepSeek Flash Latest — $0.07 in / $0.5 out per 1M
- ByteDance Seed: Seed-2.0-Mini — $0.1 in / $0.4 out per 1M
- Google: Gemini 2.5 Flash Lite — $0.1 in / $0.4 out per 1M
- OpenAI: GPT-4.1 Nano — $0.1 in / $0.4 out per 1M
- Z.ai: GLM 4.7 Flash — $0.0605 in / $0.4 out per 1M
Where to run OpenAI: GPT-6 Luna
AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.
Run it on AI/ML API →Run it on Novita AI →
Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.
Compare OpenAI: GPT-6 Luna with other models
OpenAI: GPT-6 Luna vs OpenAI: gpt-oss-20bOpenAI: GPT-6 Luna vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-6 Luna vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-6 Luna vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-6 Luna vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-6 Luna vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: GPT-6 Luna cost?
OpenAI: GPT-6 Luna costs $0.1 per 1M input tokens and $0.5 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $2.
What is the context window of OpenAI: GPT-6 Luna?
OpenAI: GPT-6 Luna has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-6 Luna?
Cheaper models include PrismML: Ternary Bonsai 2 27B ($0.075 in / $0.5 out), DeepSeek: DeepSeek Flash Latest ($0.07 in / $0.5 out), ByteDance Seed: Seed-2.0-Mini ($0.1 in / $0.4 out). See the full list on this page.
Is OpenAI: GPT-6 Luna free to use?
No. OpenAI: GPT-6 Luna is a paid model at $0.1 input / $0.5 output per 1M tokens. 21 free models are listed on the free models page.
What is the official price of OpenAI: GPT-6 Luna?
On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-6 Luna is listed at $0.1 per 1M input tokens and $0.5 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/gpt-6-luna · Modality: text+image+file->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices