Claude Haiku 4.5 vs LongCat-Flash-Thinking-2601 Comparison
Comparing Claude Haiku 4.5 and LongCat-Flash-Thinking-2601 across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Claude Haiku 4.5 outperforms in 1 benchmarks (SWE-Bench Verified), while LongCat-Flash-Thinking-2601 is better at 5 benchmarks (AIME 2025, GPQA, Tau2 Airline, Tau2 Retail, Tau2 Telecom).
LongCat-Flash-Thinking-2601 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Haiku 4.5 ($1.00/1M tokens) is 3.3x more expensive than LongCat-Flash-Thinking-2601 ($0.30/1M tokens).
For output processing, Claude Haiku 4.5 ($5.00/1M tokens) is 4.2x more expensive than LongCat-Flash-Thinking-2601 ($1.20/1M tokens).
In conclusion, Claude Haiku 4.5 is more expensive than LongCat-Flash-Thinking-2601.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Haiku 4.5 accepts 200,000 input tokens compared to LongCat-Flash-Thinking-2601's 128,000 tokens. LongCat-Flash-Thinking-2601 can generate longer responses up to 128,000 tokens, while Claude Haiku 4.5 is limited to 64,000 tokens.
Input Capabilities
Supported data types and modalities
Claude Haiku 4.5 supports multimodal inputs, whereas LongCat-Flash-Thinking-2601 does not.
Claude Haiku 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Haiku 4.5
LongCat-Flash-Thinking-2601
License
Usage and distribution terms
Claude Haiku 4.5 is licensed under a proprietary license, while LongCat-Flash-Thinking-2601 uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
Claude Haiku 4.5 was released on 2025-10-15, while LongCat-Flash-Thinking-2601 was released on 2026-01-14.
LongCat-Flash-Thinking-2601 is 3 months newer than Claude Haiku 4.5.
Oct 15, 2025
5 months ago
Jan 14, 2026
2 months ago
3mo newerKnowledge Cutoff
When training data ends
Claude Haiku 4.5 has a documented knowledge cutoff of 2025-02-01, while LongCat-Flash-Thinking-2601's cutoff date is not specified.
We can confirm Claude Haiku 4.5's training data extends to 2025-02-01, but cannot make a direct comparison without LongCat-Flash-Thinking-2601's cutoff date.
Feb 2025
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Provider Availability
Claude Haiku 4.5 is available from Anthropic. LongCat-Flash-Thinking-2601 is available from Meituan. The availability of providers can affect quality of the model and reliability.
Claude Haiku 4.5
LongCat-Flash-Thinking-2601
Outputs Comparison
Key Takeaways
Claude Haiku 4.5
View detailsAnthropic
Detailed Comparison
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