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MeituanReleased on Aug 29, 2025

LongCat-Flash-Chat: API Pricing, Context Window & Benchmarks

LongCat-Flash-Chat is a language model from Meituan, released in August 2025.

LongCat-Flash-Chat is Meituan's first open-source foundation model, a 560B parameter Mixture-of-Experts (MoE) model that dynamically activates 18.6B-31.3B parameters (~27B average) based on contextual demands. It features Zero-Computation

Input
Text
Output
Text
Speed
Latency p953.00s
Throughput P95100char/s
Cost
$0.40/ 1M · 8:1 in:out
$0.30 in · $1.20 out

LongCat-Flash-Chat benchmarks

Capability tiers

Standing within each category, adjusted for leaderboard depth.

Real tasks performance

How LongCat-Flash-Chat performs across real-world prompt categories.

Performance by conversation depth

How LongCat-Flash-Chat holds up as conversations get longer.

Quality Tracker

LongCat-Flash-Chat Performance Across Datasets

Scores sourced from the model's scorecard, paper, or official blog posts

LLM Stats Logollm-stats.com - Mon Aug 24 2026
Notice missing or incorrect data?

LongCat-Flash-Chat pricing

Providers

LongCat-Flash-Chat starts at $0.300 per million input tokens and $1.20 per million output tokens via Meituan.

ProviderInput $/MCached input $/MOutput $/MContext in / outTTFT p95 sOutput p5 c/sModalities in / out
Meituan logoMeituan
$0.300—$1.20128.0K/128.0K
3.00
—
/

Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.

LongCat-Flash-Chat model size

LongCat-Flash-Chat has 560 billion parameters. See how it compares to other models in the same parameter range.

Parameters
560B
Frontier (200B+)
560B
1B7B70B405B

LongCat-Flash-Chat context window

Input and output token limits for LongCat-Flash-Chat, plus how it ranks on long-context understanding.

InputOutput
128Ktokens
128Ktokens
≈ 192 pages of text
128K
8K128K1M

LongCat-Flash-Chat API

Available from the model provider

LongCat-Flash-Chat has an official provider API. It is not currently routed through the LLM Stats gateway.

Read the official API documentation

LongCat-Flash-Chat latency

LongCat-Flash-Chat time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.

LongCat-Flash-Chat examples

Recent arena outputs from LongCat-Flash-Chat, picked from the highest-ranked matchups.

LongCat-Flash-Chat license

LongCat-Flash-Chat is released under the MIT license, which permits commercial use, has 560.0B parameters.

License
MIT
Commercial use allowed
Parameters
560.0B

MIT License - allows commercial use

LongCat-Flash-Chat resources

Official sources for LongCat-Flash-Chat: api documentation, official playground, paper or system card, source repository, model weights.

LongCat-Flash-Chat vs other models

The most-compared alternatives to LongCat-Flash-Chat are LongCat-Flash-Thinking, DeepSeek R1 Zero, Phi 4 Reasoning. Open any pair side-by-side for benchmarks, pricing, context, and latency.

Models like LongCat-Flash-Chat

Models ranked just above and below LongCat-Flash-Chat by LLM Stats score.

 

LongCat-Flash-Thinking

Score pending
DetailsCompare
 

DeepSeek R1 Zero

Score pending
DetailsCompare
 

Phi 4 Reasoning

Score pending
DetailsCompare
 

Claude 3.7 Sonnet

Score pending
DetailsCompare
 

Qwen3 VL 32B Thinking

Score pending
DetailsCompare
 

Qwen3-235B-A22B-Instruct-2507

Score pending
DetailsCompare

FAQ

Common questions about LongCat-Flash-Chat.

When was LongCat-Flash-Chat released?

LongCat-Flash-Chat was released on August 29, 2025 by Meituan. This is the official LongCat-Flash-Chat release date tracked on LLM Stats.

How much does LongCat-Flash-Chat cost?

LongCat-Flash-Chat pricing starts at $0.30 per million input tokens and $1.20 per million output tokens via Meituan, the lowest price among tracked providers.

Is LongCat-Flash-Chat available via API?

Yes, LongCat-Flash-Chat is available via API. See the official documentation for authentication and endpoint details. It is served by 1 provider tracked on LLM Stats.

How big is LongCat-Flash-Chat?

LongCat-Flash-Chat has 560 billion parameters. It ships as an open-weight model, so you can download and run it on your own hardware.

Who created LongCat-Flash-Chat?

LongCat-Flash-Chat was created by Meituan.

What is the license for LongCat-Flash-Chat?

LongCat-Flash-Chat is released under the MIT license. This is an open-source / open-weight license that permits self-hosting.

What is LongCat-Flash-Chat latency?

LongCat-Flash-Chat p95 time to first token is 3.00 seconds via Meituan over the trailing 7 days. Lower time to first token means the model begins responding sooner for chat, agents and API workloads.

Where can I use LongCat-Flash-Chat?

LongCat-Flash-Chat is available through 1 provider including Meituan.

Where is the LongCat-Flash-Chat paper or technical report?

LongCat-Flash-Chat has a paper or technical report available at https://arxiv.org/abs/2509.01322. Use that source for architecture, training, release and evaluation details.

What models should I compare LongCat-Flash-Chat against?

Common LongCat-Flash-Chat comparisons include LongCat-Flash-Chat vs LongCat-Flash-Thinking, LongCat-Flash-Chat vs DeepSeek R1 Zero, LongCat-Flash-Chat vs Phi 4 Reasoning. Compare them side by side for benchmark scores, pricing, context window, latency and API availability.