Claude Opus 4.1 vs LongCat-Flash-Chat Comparison

Comparing Claude Opus 4.1 and LongCat-Flash-Chat across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude Opus 4.1 outperforms in 4 benchmarks (AIME 2025, GPQA, SWE-Bench Verified, Terminal-Bench), while LongCat-Flash-Chat is better at 0 benchmarks.

Claude Opus 4.1 significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Chat costs less

For input processing, Claude Opus 4.1 ($15.00/1M tokens) is 50.0x more expensive than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, Claude Opus 4.1 ($75.00/1M tokens) is 62.5x more expensive than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, Claude Opus 4.1 is more expensive than LongCat-Flash-Chat.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude Opus 4.1

Input tokens$15.00

Output tokens$75.00

Best providerAnthropic

LongCat-Flash-Chat

Input tokens$0.30

Output tokens$1.20

Best providerMeituan

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Context Window

Maximum input and output token capacity

Claude Opus 4.1 accepts 200,000 input tokens compared to LongCat-Flash-Chat's 128,000 tokens. LongCat-Flash-Chat can generate longer responses up to 128,000 tokens, while Claude Opus 4.1 is limited to 32,000 tokens.

Claude Opus 4.1

Input200,000 tokens

Output32,000 tokens

LongCat-Flash-Chat

Input128,000 tokens

Output128,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.1 supports multimodal inputs, whereas LongCat-Flash-Chat does not.

Claude Opus 4.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.1

Text

Images

Audio

Video

LongCat-Flash-Chat

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4.1 is licensed under a proprietary license, while LongCat-Flash-Chat uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Opus 4.1

Proprietary

Closed source

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 4.1 was released on 2025-08-05, while LongCat-Flash-Chat was released on 2025-08-29.

LongCat-Flash-Chat is 1 month newer than Claude Opus 4.1.

Claude Opus 4.1

Aug 5, 2025

7 months ago

LongCat-Flash-Chat

Aug 29, 2025

6 months ago

3w newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Opus 4.1 is available from Anthropic, Bedrock, Google. LongCat-Flash-Chat is available from Meituan. The availability of providers can affect quality of the model and reliability.