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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

※ OpenRouter 实测（2026-10）：输入 $0.10 / 输出 $0.50（美元/百万 tokens），与 GPT-5.6 Luna 同为 1.05M 上下文但价格减半

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

B

Data confidence

79%

Capability49
Scale44
Value91
Context44.1
Ecosystem21
Freshness35

Capabilities & use cases

Best for

  • 超长上下文低成本推理
  • 高并发线上服务
  • Agent 长任务记忆
  • 文档与代码批量处理

Official links

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

Same vendor

GPT-6.1 SolGPT-6 AstraGPT-5.6 LunaGPT-5.6 SolGPT-5.6 TerraGPT-5 Nano

Similar price

GLM-5.3-Flash $0.5Claude Haiku 5.5 $0.5ERNIE 4.5 Turbo ¥3.2Qwen3.8-Flash (Tongyi) $0.47DeepSeek-V4.1-Flash $0.6MiMo-V2.6-Flash $0.28

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.