Model Comparison

Claude Opus 4.5 vs LongCat-Flash-LiteWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. LongCat-Flash-Lite is 57.1x cheaper per token.

Verdict: Claude Opus 4.5 vs LongCat-Flash-Lite — which is better?

Claude Opus 4.5 (by Anthropic) and LongCat-Flash-Lite (by Meituan) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude Opus 4.5 outperforms in 4 benchmarks (GPQA, SWE-Bench Verified, Tau2 Retail, Tau2 Telecom), while LongCat-Flash-Lite is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, LongCat-Flash-Lite is roughly 57.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

LongCat-Flash-Lite also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 4 of 4 shared benchmarks

Choose LongCat-Flash-Lite if…

  • cost matters — it's about 57.1x cheaper per token
  • you process long inputs — it offers a 256,000 token context window
  • you want the most recent training data — it shipped Feb 2026
  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude Opus 4.5 outperforms in 4 benchmarks (GPQA, SWE-Bench Verified, Tau2 Retail, Tau2 Telecom), while LongCat-Flash-Lite is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Tue Jun 23 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Lite costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 50.0x more expensive than LongCat-Flash-Lite ($0.10/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 62.5x more expensive than LongCat-Flash-Lite ($0.40/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than LongCat-Flash-Lite.*

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

Lowest available price from all providers
Tue Jun 23 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
Meituan
LongCat-Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerMeituan
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

LongCat-Flash-Lite accepts 256,000 input tokens compared to Claude Opus 4.5's 200,000 tokens. LongCat-Flash-Lite can generate longer responses up to 128,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
Meituan
LongCat-Flash-Lite
Input256,000 tokens
Output128,000 tokens
Tue Jun 23 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas LongCat-Flash-Lite does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

Text
Images
Audio
Video

LongCat-Flash-Lite

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while LongCat-Flash-Lite uses MIT.

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

Claude Opus 4.5

Proprietary

Closed source

LongCat-Flash-Lite

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while LongCat-Flash-Lite was released on 2026-02-05.

LongCat-Flash-Lite is 2 months newer than Claude Opus 4.5.

Claude Opus 4.5

Nov 24, 2025

7 months ago

LongCat-Flash-Lite

Feb 5, 2026

4 months ago

2mo newer

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while LongCat-Flash-Lite's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without LongCat-Flash-Lite's cutoff date.

Claude Opus 4.5

Mar 2025

LongCat-Flash-Lite

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. LongCat-Flash-Lite is available from Meituan.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

LongCat-Flash-Lite

meituan logo
Meituan
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Supports multimodal inputs
Higher GPQA score (87.0% vs 66.8%)
Higher SWE-Bench Verified score (80.9% vs 54.4%)
Higher Tau2 Retail score (88.9% vs 73.1%)
Higher Tau2 Telecom score (98.2% vs 72.8%)
Meituan
Larger context window (256,000 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Meituan
LongCat-Flash-Lite

FAQ

Common questions about Claude Opus 4.5 vs LongCat-Flash-Lite.

Which is better, Claude Opus 4.5 or LongCat-Flash-Lite?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and LongCat-Flash-Lite is made by Meituan. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to LongCat-Flash-Lite in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. LongCat-Flash-Lite scores MATH-500: 96.8%, MMLU: 85.5%, CMMLU: 82.5%, MMLU-Pro: 78.3%, Tau2 Retail: 73.1%.

Is Claude Opus 4.5 cheaper than LongCat-Flash-Lite?

LongCat-Flash-Lite is 50.0x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. LongCat-Flash-Lite costs $0.10/M input and $0.40/M output via meituan.

What are the context window sizes for Claude Opus 4.5 and LongCat-Flash-Lite?

Claude Opus 4.5 supports 200K tokens and LongCat-Flash-Lite supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 4.5 and LongCat-Flash-Lite?

Key differences include context window (200K vs 256K), input pricing ($5.00 vs $0.10/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and LongCat-Flash-Lite?

Claude Opus 4.5 is developed by Anthropic and LongCat-Flash-Lite is developed by Meituan.

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