Pricingby GlyphGPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series.
Ways to buy 8
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
flex, cheapest · cached $0.01 | $0.1 | $0.6 | $0.1 / $0.6-50% vs list | $0.01 | -50% vs list |
The lab's own API · cached $0.02 | $0.2 | $1.2 | $0.2 / $1.2List price | $0.02 | List price |
 AWS Bedrockglobal · cached $0.02 | $0.2 | $1.2 | $0.2 / $1.2Same as list | $0.02 | Same as list |
Default region · cached $0.02 | $0.2 | $1.2 | $0.2 / $1.2Same as list | $0.02 | Same as list |
| AWS Bedrock us-east-1 · cached $0.022 | $0.22 | $1.32 | $0.22 / $1.32+10% vs list | $0.022 | +10% vs list |
eu · cached $0.022 | $0.22 | $1.32 | $0.22 / $1.32+10% vs list | $0.022 | +10% vs list |
us · cached $0.022 | $0.22 | $1.32 | $0.22 / $1.32+10% vs list | $0.022 | +10% vs list |
fast · cached $0.04 | $0.4 | $2.4 | $0.4 / $2.4+100% vs list | $0.04 | +100% vs list |
USD per 1M tokens; batch $0.1 in, $0.6 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $44.00 direct.
Kong AI Gateway$44.00+0%
LiteLLM$44.00+0%
Neon AI Gateway$44.00+0%
Vercel AI Gateway$44.00+0%
Cloudflare AI Gateway$46.20+5%
Requesty$46.20+5%
Eden AI$46.42+5.5%
OpenRouter$46.42+5.5%
HeliconeNot offeredNot offered
A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | |||||||
|---|---|---|---|---|---|---|---|---|
OpenAI · 1.05MCheapest: $1 on OpenAI (flex) | $1 | $5 | $1 / $5 | $2 | 1.05M | $1 on OpenAI (flex) | · | GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. |
OpenAI · 1.05MCheapest: $1 on OpenAI (flex) | $1 | $5 | $1 / $5 | $2 | 1.05M | $1 on OpenAI (flex) | · | GPT-6.1 Terra Pro is the same underlying model as GPT-6.1 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks. |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks. |
DeepSeek · 1MCheapest: $0.081 on Particle AI (us-flex) | $0.15 | $0.6 | $0.15 / $0.6 | $0.262 | 1M | $0.081 on Particle AI (us-flex) | · | DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the deepseek-flash API model name. |
Z.ai · 1M | $0.179 | $1.4 | $0.179 / $1.4 | $0.484 | 1M | on Wafer (fp4) | · | GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. |
Z.ai · 1M | $0.37 | $1.25 | $0.37 / $1.25 | $0.59 | 1M | Lab list price | · | GLM-5.3-FlashX-Legal (GLM-Legal) is Z.ai's legal-domain variant of GLM-5.3-FlashX, a native multimodal model that accepts text, image, and video input and produces text. |
 Titan Multimodal Embeddings G1Amazon Nova · 0K | $0.8 | Free | $0.8 / Free | $0.6 | 0K | Lab list price | · | Amazon Titan Multimodal Embeddings G1 embeds text, images, or text and image together into a shared vector space for multimodal search and recommendation. |
About GPT-5.6 Luna
Takes files, image, text in and returns text. First listed Jul 17, 2026. Up to 128K output tokens. Blended price $0.45 per 1M tokens at 3 input to 1 output. Model id gpt-5-6-luna.
Price history
List price since Jul 17, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
GPT-5.6 Luna
OpenAI raised its API price: input $0.1 to $0.2 and output $0.6 to $1.2 per 1M tokens.
OpenAI cut its API price: input $0.5 to $0.1 and output $3 to $0.6 per 1M tokens.
OpenAI cut its API price: input $1 to $0.5 and output $6 to $3 per 1M tokens.
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 8 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.