# GPT-6 Luna API

GPT-6 Luna is OpenAI's efficient model for focused, high-volume tasks, with text and image input, a 1.05M-token context window and up to 128K output tokens; list price $0.10 in / $0.50 out per 1M tokens, provider list as at 1 November 2026.

- Provider: OpenAI
- Model ID: gpt-6-luna
- Type: Chat
- Region: Global (provider global routing)
- Context window: 1,050,000 tokens
- Max output: 128,000 tokens
- Modalities: text, vision, tools, reasoning
- Endpoints: OpenAI Chat Completions https://api.seedrise.ai/v1
- Prices checked: 1 November 2026

## Provider list price

Provider list price as at 1 November 2026, per 1M tokens. AUD at a reference rate of 1 USD = 1.53 AUD; invoices use the rate on the day.

| Token type | USD | AUD |
|---|---:|---:|
| Input | 0.10 | 0.15 |
| Output | 0.50 | 0.77 |
| Cached input | 0.010 | 0.015 |

Your Seedrise rate is quoted per account against this list price. Request a rate card: https://seedrise.ai/contact?model=gpt-6-luna

Global: runs on the provider's global routing; no Australian-region option as at 1 November 2026. Over Chat Completions, which is how Seedrise serves it, OpenAI supports function calling on Luna only when reasoning effort is set to none.

## Strengths

- List price one hundredth of GPT-6 Astra
- Reasoning effort from none to max, medium by default
- Cached input lists at $0.01 per 1M tokens
- Knowledge cutoff of 18 May 2026

## Typical use cases

- Classification, tagging and routing at scale
- Short-form extraction and summarisation
- High-volume enrichment of records
- Lightweight assistants embedded in products

## Quickstart

A first request with curl. Replace sk-... with your Seedrise key.

```bash
curl https://api.seedrise.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-6-luna","messages":[{"role":"user","content":"Hello"}]}'
```

OpenAI SDK, Python:

```python
from openai import OpenAI

client = OpenAI(base_url="https://api.seedrise.ai/v1", api_key="sk-...")

r = client.chat.completions.create(
    model="gpt-6-luna",
    messages=[{"role": "user", "content": "Summarise this contract in three bullets."}],
)
print(r.choices[0].message.content)
```

## Where it runs

Global: Served on the provider's global routing.

## Related models

- [GPT-6 Astra](https://seedrise.ai/models/gpt-6-astra): US$10.00 input · US$50.00 output per 1M tokens, Global
- [GPT-6.1 Sol](https://seedrise.ai/models/gpt-6.1-sol): US$2.00 input · US$10.00 output per 1M tokens, Global
- [GPT-6.1 Terra](https://seedrise.ai/models/gpt-6.1-terra): US$1.00 input · US$5.00 output per 1M tokens, Global
- [GPT Image 2.5](https://seedrise.ai/models/gpt-image-2.5): US$30.00 per 1M image output tokens, Global
- [Claude Haiku 5.5](https://seedrise.ai/models/claude-haiku-5-5): US$0.10 input · US$0.50 output per 1M tokens, AU
- [Qwen3.8 Flash](https://seedrise.ai/models/qwen3.8-flash): US$0.15 input · US$0.47 output per 1M tokens, SG
- [Mistral Small 4](https://seedrise.ai/models/mistral-small-4): US$0.15 input · US$0.60 output per 1M tokens, Global

## FAQ

### What is the model ID for GPT-6 Luna?

Use gpt-6-luna as the model field, with no vendor prefix, on the OpenAI-compatible endpoint at https://api.seedrise.ai/v1. GET /v1/models returns the IDs your key can call.

### How does the Seedrise rate for GPT-6 Luna compare to the list price?

OpenAI's list price as at 1 November 2026 is US$0.10 per 1M input tokens and US$0.50 per 1M output tokens. Seedrise quotes rates per account against the provider's published list price for the same routing. Volume and committed tiers sit below list.

### What is the context window and max output of GPT-6 Luna?

GPT-6 Luna has a context window of 1,050,000 tokens and a maximum output of 128,000 tokens, per the provider documentation checked on 1 November 2026.

### Can GPT-6 Luna run in Australia?

Not at present. GPT-6 Luna is served on the provider's global routing. Models marked AU in the model library can be pinned to Sydney or Melbourne on request.

### Why does function calling fail on GPT-6 Luna?

OpenAI only supports function calling for Luna over Chat Completions when reasoning effort is none. Set reasoning_effort to none for tool calls, or route tool-heavy work to another model.

### Does long-context pricing apply to GPT-6 Luna?

Yes. Prompts over 272K input tokens are billed for the whole request at $0.20 in / $0.75 out and $0.02 cached per 1M tokens, at list as at 1 November 2026.

Model names are trademarks of their respective providers.

Source: https://seedrise.ai/models/gpt-6-luna