# LongCat-2.5-Preview vs GPT-6 Luna - AI Model Comparison

- Page: https://opencode.ai/data/compare/meituan/longcat-2-5-preview/openai/gpt-6-luna
- Updated: 2026-10-09T04:46:40.000Z

|  | LongCat-2.5-Preview | GPT-6 Luna |
| --- | --- | --- |
| Lab | Meituan | OpenAI |
| Context window | 1M | 1.1M |
| Max output | 131K | 128K |
| Input modalities | text, image | text, image, pdf |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | No | No |
| Release date | 2026-09-25 | 2026-09-22 |
| Input price per 1M tokens | $0.30 | $0.10 |
| Output price per 1M tokens | $1.20 | $0.50 |
| Cached input price per 1M tokens | $0.0060 | $0.01 |
| OpenCode tokens: past 2 months | 4.9T | 1.5T |
| Share of all tokens | 0.5% | 0.1% |
| Rank by tokens last week | #7 | #10 |
| Unique users | 115K | 226K |
| Weekly retention | 71.4% | 71.9% |

Model pages: [LongCat-2.5-Preview](https://opencode.ai/data/meituan/longcat-2-5-preview.md), [GPT-6 Luna](https://opencode.ai/data/openai/gpt-6-luna.md)

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.