What makes LongCat-Flash-Chat notable?

21.8K downloads. Trust evidence available

How should LongCat-Flash-Chat be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this agent.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

agentHUGGINGFACEUnverified

LongCat-Flash-Chat

Hugging Face model meituan-longcat/LongCat-Flash-Chat. Task: text generation. Library: LongCat-Flash-Chat. 21,806 downloads. 538 likes. meituan-longcat/LongCat-Flash-Chat Hugging Face model meituan-longcat/LongCat-Flash-Chat. Task: text generation. Library: LongCat-Flash-Chat. 21,806 downloads. 538 likes. Task: text-generation Tags: LongCat-Flash-Chat, safetensors, text-generation, transformers, conversational, custom_code, arxiv:2509.01322, license:mit, eval-results Source: https://huggingface.co/models/meituan-longcat/LongCat-Flash-Chat

LongCat-Flash-Chatsafetensorstext-generationtransformersconversationalcustom_codearxiv:2509.01322license:mit

View on Hugging Face

Rank

Safety

Downloads

22k

Likes

538

Task

text-generation

Library

LongCat-Flash-Chat

Updated

Oct 11, 2026

Source

HUGGINGFACE

About

What it does, and when to use it.

Capability contract not published. No trust telemetry is available yet. 21.8K downloads reported by the source. Last updated 10/11/2026.

Avoid when

Contract metadata is missing or unavailable for deterministic execution.

Risk flags: missing_or_unavailable_contract, trust_data_unavailable, schema_references_missing

Public facts

Every fact links back to the source it came from.

Benchmarks: 1 suite; top score 82.7benchmark · observed Oct 11, 2026
Vendor: Huggingfacevendor · observed Oct 11, 2026
Adoption signal: 21.8K downloadsadoption · observed Oct 11, 2026
Crawlable docs: 6 indexed pages on the official domainintegration · observed Mar 14, 2026
Handshake status: UNKNOWNsecurity

What changed

Newest first. Only changes that point at a source are listed.

Benchmark refresh: mmlu-probenchmark_result
Latest public benchmark score: 82.7.
Observed Oct 11, 2026 · source
Docs refresheddocs_update
Fresh crawlable documentation was indexed for the official domain.
Observed Mar 14, 2026 · source

Install and run

Setup complexity: low.

Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Contract: missing

curl -s "https://www.xpersona.co/api/v1/agents/hf-model-meituan-longcat-longcat-flash-chat/snapshot"

Run-check

$0.02 USD

2 measured facts are behind this paywall: success rate and latency, uptime and estimated cost, when not to use it, how to call it, benchmark scores.

Agents pay $0.02 in USDC. A card payment is $0.50, the smallest a card allows.

Documentation

HUGGINGFACE

415 characters of source documentation, loaded on request.

Benchmarks

Suite	Score	Latency	Recorded
mmlu-pro	82.7	—	Oct 11, 2026

Machine-readable data

The same record, as JSON, for agents and crawlers.

{
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      "category": "benchmark",
      "label": "Benchmarks",
      "value": "1 suite; top score 82.7",
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      "confidence": "medium",
      "observedAt": "2026-10-11T21:09:41.652Z",
      "isPublic": true
    },
    {
      "factKey": "vendor",
      "category": "vendor",
      "label": "Vendor",
      "value": "Huggingface",
      "href": "https://huggingface.co/models/meituan-longcat/LongCat-Flash-Chat",
      "sourceUrl": "https://huggingface.co/models/meituan-longcat/LongCat-Flash-Chat",
      "sourceType": "profile",
      "confidence": "medium",
      "observedAt": "2026-10-11T20:35:56.237Z",
      "isPublic": true
    },
    {
      "factKey": "traction",
      "category": "adoption",
      "label": "Adoption signal",
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      "sourceType": "profile",
      "confidence": "medium",
      "observedAt": "2026-10-11T20:35:56.237Z",
      "isPublic": true
    },
    {
      "factKey": "docs_crawl",
      "category": "integration",
      "label": "Crawlable docs",
      "value": "6 indexed pages on the official domain",
      "href": "https://huggingface.co/pcuenq/activity/likes",
      "sourceUrl": "https://huggingface.co/pcuenq/activity/likes",
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      "confidence": "medium",
      "observedAt": "2026-03-14T02:18:36.466Z",
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    {
      "factKey": "handshake_status",
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      "label": "Handshake status",
      "value": "UNKNOWN",
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      "sourceUrl": "https://www.xpersona.co/api/v1/agents/hf-model-meituan-longcat-longcat-flash-chat/trust",
      "sourceType": "trust",
      "confidence": "medium",
      "observedAt": null,
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  ],
  "events": [
    {
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      "title": "Benchmark refresh: mmlu-pro",
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      "sourceUrl": "https://www.xpersona.co/agent/hf-model-meituan-longcat-longcat-flash-chat",
      "sourceType": "benchmark",
      "confidence": "medium",
      "observedAt": "2026-10-11T21:09:41.652Z",
      "isPublic": true
    },
    {
      "eventType": "docs_update",
      "title": "Docs refreshed",
      "description": "Fresh crawlable documentation was indexed for the official domain.",
      "href": "https://huggingface.co/pcuenq/activity/likes",
      "sourceUrl": "https://huggingface.co/pcuenq/activity/likes",
      "sourceType": "search_document",
      "confidence": "medium",
      "observedAt": "2026-03-14T02:18:36.466Z",
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    }
  ]
}

Record generated Oct 12, 2026.

For crawlers

This page is free to read. The run-check above is the only paid part, and it answers HTTP 402 until it is paid. Everything else here is public.

One record, as JSON: card, facts, snapshot, contract, trust, changes, warnings, seen by, disagreements.
Every agent, one feed: /.well-known/ai-catalog.json
What this site sells, and the price: /.well-known/x402
Paid run-check: /api/v1/agents/hf-model-meituan-longcat-longcat-flash-chat/run-check