API pricing per million tokens
- Input
- $0.2
- per 1M, list
- Output
- $1.2
- per 1M tokens
- Cached input
- $0.02
- batch $0.1 / $0.6
- Context
- 1.05M
- 128K max output
Price history
List price since Jul 17, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
| Seen | Model | Old price | New price | Change |
|---|---|---|---|---|
| Aug 21, 2026 |  GPT-5.6 LunaInput $0.1 to $0.2, Output $0.6 to $1.2, Cached input $0.01 to $0.02 | Input $0.1Output $0.6Cached input $0.01 | Input $0.2Output $1.2Cached input $0.02 | +100% |
| Jul 31, 2026 | GPT-5.6 LunaInput $0.5 to $0.1, Output $3 to $0.6, Cached input $0.05 to $0.01 | Input $0.5Output $3Cached input $0.05 | Input $0.1Output $0.6Cached input $0.01 | -80% |
| Jul 28, 2026 | GPT-5.6 LunaInput $1 to $0.5, Output $6 to $3, Cached input $0.1 to $0.05 | Input $1Output $6Cached input $0.1 | Input $0.5Output $3Cached input $0.05 | -50% |
Through a gateway
Your own numbers100M input and 20M output tokens a month: $44.00 direct.
Helicone$44.00+0%
Kong AI Gateway$44.00+0%
LiteLLM$44.00+0%
Vercel AI Gateway$44.00+0%
AWS Bedrock$44.00+0%
Azure AI Foundry$44.00+0%
Google Vertex AI$44.00+0%
Databricks Mosaic AI$44.00+0%
Hugging Face Inference$44.00+0%
Cloudflare AI Gateway$46.20+5%
Requesty$46.20+5%
Eden AI$46.42+5.5%
OpenRouter$46.42+5.5%
Snowflake Cortex AI$52.80+20%
Martian Gatewayn/a
Portkeyn/a
TrueFoundry AI Gatewayn/a
IBM watsonx.ain/a
OCI Generative AIn/a
NVIDIA NIMn/a
Related models
GLM 4.6Z.ai · via Venice (fp4) · 205K$0.43 / $1.75in / out per 1M$0.43$1.75$0.08205KSep 30, 2025
DeepSeek V4.1 FlashDeepSeek · 1M$0.15 / $0.6in / out per 1M$0.15$0.6$0.0031MSep 10, 2026
Kimi K2.5Moonshot AI · via SiliconFlow (int4) · 262K$0.45 / $2.25in / out per 1M$0.45$2.25$0.07262KJan 27, 2026
Gemini 3.1 Flash LiteGoogle Gemini API · 1M$0.25 / $1.5in / out per 1M$0.25$1.5$0.0251MMay 7, 2026
About GPT-5.6 Luna
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series.
Takes files, image, text in and returns text. First listed Jul 17, 2026. Blended price $0.45 per 1M tokens at 3 input to 1 output.
Questions
How much does GPT-5.6 Luna cost?
$0.2 per million input tokens and $1.2 per million output tokens, with cached input at $0.02, or $0.1 and $0.6 through the Batch API.
What is the context window of GPT-5.6 Luna?
1.05M tokens, with up to 128K tokens of output.
Where is GPT-5.6 Luna cheapest?
Of 7 routes tracked, OpenAI is cheapest at $0.1 input and $0.6 output per million tokens.
Has GPT-5.6 Luna's price changed?
Yes. The output price went from $0.6 to $1.2, first seen Aug 21, 2026.
List prices from providers' pages on the date shown; your contract may differ. Logos via logo.dev; trademarks belong to their owners.