Claude Opus 4 vs LongCat-Flash-Chat Comparison

Comparing Claude Opus 4 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 outperforms in 3 benchmarks (AIME 2025, GPQA, SWE-Bench Verified), while LongCat-Flash-Chat is better at 1 benchmark (Terminal-Bench).

Claude Opus 4 shows notably better performance in the majority of 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 ($15.00/1M tokens) is 50.0x more expensive than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, Claude Opus 4 ($75.00/1M tokens) is 62.5x more expensive than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, Claude Opus 4 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

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 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 is limited to 32,000 tokens.

Claude Opus 4

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

Claude Opus 4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4

Text

Images

Audio

Video

LongCat-Flash-Chat

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4 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

Proprietary

Closed source

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 4 was released on 2025-05-22, while LongCat-Flash-Chat was released on 2025-08-29.

LongCat-Flash-Chat is 3 months newer than Claude Opus 4.

Claude Opus 4

May 22, 2025

9 months ago

LongCat-Flash-Chat

Aug 29, 2025

6 months ago

3mo 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 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.