GPT-5.6 Luna Pro (batch)
$0.10 per 1M input tokens and $0.60 per 1M output tokens · 1.05M context · vision, tools, reasoning, JSON.
Prices checked Oct 21, 2026 · tracked by LLM Cost Index since Oct 21, 2026
What GPT-5.6 Luna Pro (batch) costs per month
Estimated monthly bill for typical workloads, using the cached-input price for repeated context. Try your own numbers in the cost calculator.
| Workload | Per month |
|---|---|
| Customer chatbot 1,000 conversations a day, 8 turns each | $66.96 |
| Document Q&A (RAG) 500 questions a day over retrieved documents | $12.69 |
| Coding / tool-using agent 200 tasks a day, long tool-heavy contexts | $26.10 |
| Content generation 30 long articles a day | $1.62 |
| Classification / extraction 100,000 short items a day | $117 |
Prompts above 272K tokens are billed at $0.20 input / $0.90 output per 1M.
Price history
We started tracking GPT-5.6 Luna Pro (batch) on Oct 21, 2026; the chart appears as soon as there is a second data point. See all recent price changes.
Cheaper alternatives to GPT-5.6 Luna Pro (batch)
Models with the same tool calling, image input, structured output for at least 20% less (3:1 input/output mix), most capable first.
| Model | Input / 1M | Output / 1M | Context | Capabilities |
|---|---|---|---|---|
| GLM 5.3 Flash Z.ai | $0.041 | $0.12 | 1.05M | visiontoolsreasoningJSONopen weights |
| MiMo-V2.6-Flash Xiaomi | $0.14 | $0.28 | 1.05M | visionaudiotoolsreasoningJSONopen weights |
| DeepSeek V4.1 Flash DeepSeek | $0.049 | $0.375 | 1.05M | visiontoolsreasoningJSONopen weights |
| Ling 3.0 Flash VL inclusionAI | $0.06 | $0.18 | 131K | visiontoolsreasoningJSONopen weights |
| MiMo-V2.5 Xiaomi | $0.119 | $0.238 | 1.05M | visionaudiotoolsreasoningJSONopen weights |
How to pay less for GPT-5.6 Luna Pro (batch)
For a customer chatbot (1,000 conversations a day, 8 turns each) that costs $86.40 a month at list price without caching:
| Option | Per month | You save |
|---|---|---|
| Move to GLM 5.3 Flash (similar capabilities) | $16.82 | $69.58 (81%) |
| Use prompt caching (60% of input cached) | $66.96 | $19.44 (22%) |
Other workloads: cut-your-bill tool for GPT-5.6 Luna Pro (batch).
Specifications
| Model ID | openai/gpt-5.6-luna-pro:batch |
| Input | file, image, text |
| Output | text |
| Tool calling | Yes |
| Structured output | Yes |
| Reasoning mode | Yes |
| Open weights | No |
| Knowledge cutoff | 2026-02-16 |
| Released | Jul 9, 2026 |
| Web search | $0.01 per request |
FAQ
- How much does GPT-5.6 Luna Pro (batch) cost?
- $0.10 per million input tokens and $0.60 per million output tokens; cached input costs $0.01 per million. Prompts over 272K tokens are billed at $0.20 / $0.90. Prices as of Oct 21, 2026.
- What is the context window of GPT-5.6 Luna Pro (batch)?
- 1.05M tokens, with up to 128K output tokens per response.
- Does GPT-5.6 Luna Pro (batch) support images, tools and structured output?
- Images as input: yes. Tool calling: yes. Structured (JSON) output: yes. Reasoning mode: yes.
- What are cheaper alternatives to GPT-5.6 Luna Pro (batch)?
- Models with the same key capabilities for at least 20% less include GLM 5.3 Flash ($0.041 / $0.12), MiMo-V2.6-Flash ($0.14 / $0.28), DeepSeek V4.1 Flash ($0.049 / $0.375).
More from OpenAI: all OpenAI models · how we collect prices