LongCat 2.5 Preview
LongCat 2.5 Preview is a language model from Meituan. It is currently free at 1 provider with up to 1M tokens of context. The model supports step-by-step reasoning, supports tool calling. Its weights are open, so it can also run locally.
- Developer
- Meituan
- Context
- 1M tokens
- Type
- Text
- License
- Open weights
- Free since
- September 28, 2026
Where to use LongCat 2.5 Preview for free
Each row is a separate free endpoint with its own limits.
| Provider | Context | Limit | Card | |
|---|---|---|---|---|
Nous Portal meituan/longcat-2.5-preview:free |
1M | The $0 Portal plan includes free models with standard rate limits. Model availability can change. | No | Open |
Quick start
curl https://inference-api.nousresearch.com/v1/chat/completions \
-H "Authorization: Bearer $NOUS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "meituan/longcat-2.5-preview:free",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(
base_url="https://inference-api.nousresearch.com/v1",
api_key="YOUR_NOUS_API_KEY",
)
reply = client.chat.completions.create(
model="meituan/longcat-2.5-preview:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://inference-api.nousresearch.com/v1",
apiKey: process.env.NOUS_API_KEY,
});
const reply = await client.chat.completions.create({
model: "meituan/longcat-2.5-preview:free",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);Example for Nous Portal. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.
Benchmarks
This model is not on the Artificial Analysis leaderboard yet. We do not publish our own estimates.
Similar free models
FAQ
Is LongCat 2.5 Preview free?
Yes. As of September 28, 2026, LongCat 2.5 Preview is free at Nous Portal. Each provider has its own limits — see the table above.
What is the context window of LongCat 2.5 Preview?
The largest context among free routes is 1,048,576 tokens. Some providers cap it lower.
How do I call LongCat 2.5 Preview via API?
Use any OpenAI-compatible client with base URL https://inference-api.nousresearch.com/v1, model ID meituan/longcat-2.5-preview:free, and a Nous Portal key.
Is LongCat 2.5 Preview open-weight?
Yes, the weights are published — you can download and run it locally, for example with Ollama or LM Studio.