Home › Providers › openai › OpenAI: GPT-6 Luna
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
- NVIDIA: Nemotron 3 Super — $0.08 in / $0.45 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
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 21, 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), NVIDIA: Nemotron 3 Super ($0.08 in / $0.45 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. 20 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 21, 2026, refreshed daily. How we collect prices