Meituan model product
LongCat Flash Thinking
LongCat-Flash-Thinking is Meituan's reasoning model built on the LongCat-Flash foundation with 560B total parameters (MoE, ~27B activated).
Updated Aug 12, 2026. Default version: LongCat-Flash-Thinking-2601
LLMBoard score60.8LongCat-Flash-Thinking-2601
Coverage80%11 benchmark families
Context window128KTokens
Official input priceN/AOfficial price unavailable
LongCat Flash Thinking Specifications
Technical details for the model's default version.
- Version
- LongCat-Flash-Thinking-2601
- Released
- Jan 14, 2026
- Knowledge cutoff
- Unknown
- Parameters
- 560B
- Context window
- 128K
- Max output
- 128K
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- MIT
LongCat Flash Thinking Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
LongCat Flash Thinking Benchmark Results
Benchmark scores for LongCat-Flash-Thinking-2601.
| Tau2 Airline | 76.5% | 01 | 23 | 100.0% | C | |
| Tau2 Telecom | 99.3% | 02 | 35 | 97.1% | C | |
| BrowseComp-zh | 69.0% | 04 | 13 | 75.0% | C | |
| Tau2 Retail | 88.6% | 04 | 26 | 88.0% | C | |
| LiveCodeBench | 82.8% | 06 | 73 | 93.1% | C | |
| AIME 2025 | 99.6% | 09 | 114 | 92.9% | C | |
| IMO-AnswerBench | 78.6% | 18 | 19 | 5.6% | C | |
| BrowseComp | 56.6% | 38 | 58 | 35.1% | C | |
| Humanity's Last Exam | 25.2% | 48 | 93 | 48.9% | C | |
| SWE-Bench Verified | 70.0% | 59 | 105 | 44.2% | C | |
| GPQA | 80.5% | 86 | 234 | 63.5% | C |
LongCat Flash Thinking Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
LongCat Flash Thinking Runtime Performance
Provider-specific output speed and catalog latency for LongCat-Flash-Thinking-2601. Runtime does not affect the capability score.
| Meituan | 100 tok/s | 3 s | 128K | 128K |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
LongCat Flash Thinking Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- N/A
- Tracked offerings
- 0
No provider prices
The default version has no current input or output token prices.
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
LongCat Flash Thinking Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| LongCat-Flash-Thinking-2601 | 60.8 | 560B | 128K | 128K | No | MIT | |
| LongCat-Flash-Thinking | N/A | 560B | 128K | 128K | No | MIT |
What is LongCat Flash Thinking?
Key information about LongCat Flash Thinking and its available data.
LongCat-Flash-Thinking is Meituan's reasoning model built on the LongCat-Flash foundation with 560B total parameters (MoE, ~27B activated). It introduces a training pipeline specifically tuned for advanced reasoning, featuring Re-thinking Mode that delivers parallel reasoning paths for sophisticated decision-making.
Achieves strong performance on mathematical reasoning, agentic tool use, and formal theorem proving benchmarks.
Data as of 2026-08-11.
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FAQ
Common questions about LongCat Flash Thinking.
When was LongCat Flash Thinking released?
LongCat Flash Thinking's default version was released on Jan 14, 2026.
How much does LongCat Flash Thinking cost?
No official standard PAYG price is currently available for LongCat Flash Thinking.
Who created LongCat Flash Thinking?
LongCat Flash Thinking was created by Meituan.
What is the context window for LongCat Flash Thinking?
The default version has a 128K token context window.
Is LongCat Flash Thinking open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer LongCat Flash Thinking?
No provider offering is currently linked to the default version.
What models should I compare LongCat Flash Thinking with?
Nearby ranked alternatives include MiMo, GPT-5.1-Instant, Kimi K2 Thinking.