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OpenAI: GPT-5.6 Luna (batch) API Pricing

OpenAI: GPT-5.6 Luna (batch) is an API model from openai. It costs $0.1 per 1M input tokens and $0.6 per 1M output tokens, with cached input at $0.01. Its context window is 1,050,000 tokens with up to 128,000 output tokens. A workload of 10M input + 2M output tokens costs about $2.2 per month.
Input
$0.1
per 1M tokens
Output
$0.6
per 1M tokens
Cached input
$0.01
per 1M tokens
Context window
1.05M
1,050,000 tokens
Blended (80/20)
$0.2
per 1M tokens

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...

How much does OpenAI: GPT-5.6 Luna (batch) cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: GPT-5.6 Luna (batch) costs about $2.2 ($1 input + $1.2 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to OpenAI: GPT-5.6 Luna (batch)?

Compare OpenAI: GPT-5.6 Luna (batch) with other models

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Frequently asked questions

How much does OpenAI: GPT-5.6 Luna (batch) cost?

OpenAI: GPT-5.6 Luna (batch) costs $0.1 per 1M input tokens and $0.6 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $2.2.

What is the context window of OpenAI: GPT-5.6 Luna (batch)?

OpenAI: GPT-5.6 Luna (batch) 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-5.6 Luna (batch)?

Cheaper models include DeepSeek: DeepSeek V3.2 Exp ($0.27 in / $0.41 out), Tencent: Hy3 ($0.132 in / $0.528 out), NVIDIA: Nemotron 3.5 Super VL ($0.15 in / $0.5 out). See the full list on this page.

Is OpenAI: GPT-5.6 Luna (batch) free to use?

No. OpenAI: GPT-5.6 Luna (batch) is a paid model at $0.1 input / $0.6 output per 1M tokens. 20 free models are listed on the free models page.

Provider: openai · Model ID: openai/gpt-5.6-luna:batch · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices