What does GPT-6 Luna cost?

GPT-6 Luna is priced at $0.5 output and $0.1 input (USD per 1M tokens)

How large is the context window of GPT-6 Luna?

GPT-6 Luna has a 1.05M Tokens context window with up to 128K Tokens output.

Where can I access GPT-6 Luna?

Official channels: Website and API platform.

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OpenAI

GPT-6 Luna

BClosed

OpenAI's newest ultra-light flagship (GPT-6 generation), priced at $0.10/$0.50 per million tokens with a 1.05M-token context — half the price of GPT-5.6 Luna ($0.20/$1.20) at the same context size. It is currently the cheapest million-context model in OpenAI's lineup.

API Pricing

Input

$0.1

Output

$0.5

Cached input

—

Peak hours

—

USD / 1M tokens

※ Measured on OpenRouter (2026-10): input $0.10 / output $0.50 (USD per million tokens); same 1.05M context as GPT-5.6 Luna but at half the price

Price sourceopenrouter.ai ↗developers.openai.com ↗

No price change in the last two snapshots

Price history

12 snapshots · 2026-04-28 → 2026-08-17

Current: $5.294Period low: $5.294 (2026-04-28)Period high: $5.294 (2026-04-28)First tracked: $5.294 (2026-04-28)

Specifications

Context window: 1.05M Tokens
Max output: 128K Tokens
License: Closed

Overall score

Total

51.7

Rank

#18

Tier

Data confidence

79%

Capability49

Scale44

Value91

Context44.1

Ecosystem21

Freshness35

Capabilities & use cases

Best for

Ultra-long-context low-cost inference
High-concurrency online services
Agent long-task memory
Batch document and code processing

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

GPT-6.1 Sol GPT-6 Astra GPT-5.6 Luna GPT-5.6 Sol GPT-5.6 Terra GPT-5 Nano

FAQ

What does GPT-6 Luna cost?: GPT-6 Luna is priced at $0.5 output and $0.1 input (USD per 1M tokens)
How large is the context window of GPT-6 Luna?: GPT-6 Luna has a 1.05M Tokens context window with up to 128K Tokens output.
Where can I access GPT-6 Luna?: Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.