LongCat 2.0
by MeituanReleased Jul 20, 2026
meituan/longcat-2.0- Calls tools
- Reasons before it answers
- Caches long prompts
LongCat 2.0 is a sparse mixture-of-experts language model from Meituan, with 48B active parameters out of 1.6T total. It is suited for coding, repository-level changes, long-horizon problem solving, and agentic...
- Input / 1M tokens
- $0.36
- Output / 1M tokens
- $1.44
- Context
- 1.05M
- Longest answer
- 262K
What it costs
What each call is charged to the token's AI credit.
| Billed for | You pay |
|---|---|
| Input tokens | $0.36 / 1M |
| Output tokens | $1.44 / 1M |
| Cached input, read | $0.0072 / 1M |
A typical call
A short chat turn: 2,000 tokens in, 500 out.
- per call
- $0.0014
- calls per $20
- 14K
What it can do
From its listing. The router passes every field through.
- Reads imagesNo
- Reads files and PDFsNo
- Hears audioNo
- Calls toolsYes
- Answers in a JSON schemaNo
- Reasons before it answersYes
- Searches the webNo
- Caches long promptsYes
- Draws imagesNo
Call it
Any router key works, in the format your SDK already speaks.
import OpenAI from "openai";const ai = new OpenAI({ baseURL: "https://relayfor.si/api/v1", apiKey: process.env.RELAYFOR_ROUTER_KEY,});const reply = await ai.chat.completions.create({ model: "meituan/longcat-2.0", messages: [{ role: "user", content: "Welcome the 1,000th holder in one line." }],});Specifications
What its maker and providers list for it.
- Reads
- Text
- Writes
- Text
- Context
- 1,048,756 tokens
- Longest answer
- 262,144 tokens
- Intelligence index
- 19.1 (#102 of 220 rated)
- Released
- Jul 20, 2026
- Moderation
- None
Request fields
The fields its providers accept, passed through as you send them.
- frequency_penalty
- include_reasoning
- logit_bias
- max_tokens
- min_p
- presence_penalty
- reasoning
- repetition_penalty
- seed
- stop
- temperature
- tool_choice
- tools
- top_k
- top_p
Questions
How much does LongCat 2.0 cost?
$0.36 per million input tokens and $1.44 per million output tokens, paid from the token's AI credit. A call of 2,000 tokens in and 500 out costs about $0.0014.
How do I call LongCat 2.0?
Make a router key for one of your tokens on the dashboard, point any OpenAI or Anthropic SDK at https://relayfor.si/api/v1 and send the model id meituan/longcat-2.0. The token's AI credit pays for each call.
How long a prompt can LongCat 2.0 take?
Up to 1,048,756 tokens of context, and up to 262,144 tokens in one answer.
Are my prompts stored?
No. The RFS Router passes each call through and keeps only its token counts and cost, for the token's usage page.
