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Claude Haiku 5.5 vs LongCat-Flash-Chat

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 19.8. Claude Haiku 5.5 is 2.6x cheaper per token.

Anthropic · Meituan · Updated for 2026

Which is better?

Claude Haiku 5.5 leads the overall LLM Stats Score 50.0 to 19.8, ranking #19 overall.

On price, Claude Haiku 5.5 is roughly 2.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Haiku 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Haiku 5.5

  • overall performance matters — it scores 50.0 and ranks #19 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 2.6x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Oct 2026

Choose LongCat-Flash-Chat

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
LongCat-Flash-Chat
Meituan
Core performance indexes
LLM Stats Score
50.0
#19
19.8
#214
Reasoning
47.2
#27
19.7
#210
Coding
40.2
#13
12.3
#161
Agents
33.3
#28
9.1
#142
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
$0.30 / M
Output price
$0.50 / M
$1.20 / M
Context window
1,000,000
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Claude Haiku 5.5
LongCat-Flash-Chat
Math
25.7#110
18.9#180
Tool use
20.3#59
8.4#148
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 16 for LongCat-Flash-Chat

No common benchmarks found

Claude Haiku 5.5 and LongCat-Flash-Chatdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Claude Haiku 5.5 costs less

For input processing, Claude Haiku 5.5 ($0.10/1M tokens) is 3.0x cheaper than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 2.4x cheaper than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, LongCat-Flash-Chat is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers
Fri Oct 09 2026 • llm-stats.com
Anthropic
Claude Haiku 5.5
Input tokens$0.10
Output tokens$0.50
Best providerAnthropic
Meituan
LongCat-Flash-Chat
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Claude Haiku 5.5 accepts 1,000,000 input tokens compared to LongCat-Flash-Chat's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
Meituan
LongCat-Flash-Chat
Input128,000 tokens
Output128,000 tokens
Fri Oct 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Haiku 5.5 supports multimodal inputs, whereas LongCat-Flash-Chat does not.

Claude Haiku 5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Haiku 5.5

Text
Images
Audio
Video

LongCat-Flash-Chat

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Haiku 5.5 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 Haiku 5.5

Proprietary

Closed source

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while LongCat-Flash-Chat was released on 2025-08-29.

Claude Haiku 5.5 is 13 months newer than LongCat-Flash-Chat.

Claude Haiku 5.5

Oct 7, 2026

1 days ago

1.1yr newer
LongCat-Flash-Chat

Aug 29, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while LongCat-Flash-Chat's cutoff date is not specified.

We can confirm Claude Haiku 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without LongCat-Flash-Chat's cutoff date.

Claude Haiku 5.5

Jun 2026

LongCat-Flash-Chat

—

Provider Availability

Claude Haiku 5.5 is available from Anthropic. LongCat-Flash-Chat is available from Meituan.

Claude Haiku 5.5

anthropic logo
Anthropic
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

LongCat-Flash-Chat

meituan logo
Meituan
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Haiku 5.5 and LongCat-Flash-Chat side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
LongCat-Flash-Chat
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs LongCat-Flash-Chat.

Which is better, Claude Haiku 5.5 or LongCat-Flash-Chat?

Claude Haiku 5.5 leads the LLM Stats Score 50.0 to 19.8. Claude Haiku 5.5 is made by Anthropic and LongCat-Flash-Chat is made by Meituan. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Haiku 5.5 compare to LongCat-Flash-Chat in benchmarks?

Claude Haiku 5.5 scores Global-MMLU: 87.8%, MILU: 87.6%, BenchCAD (with Python tool): 87.0%, Chartography: 86.2%, SWE-bench Multilingual: 83.7%. LongCat-Flash-Chat scores MATH-500: 96.4%, MMLU: 89.7%, IFEval: 89.6%, ZebraLogic: 89.3%, HumanEval: 88.4%.

Is Claude Haiku 5.5 cheaper than LongCat-Flash-Chat?

Claude Haiku 5.5 is 3.0x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/M output via anthropic. LongCat-Flash-Chat costs $0.30/M input and $1.20/M output via meituan.

What are the context window sizes for Claude Haiku 5.5 and LongCat-Flash-Chat?

Claude Haiku 5.5 supports 1.0M tokens and LongCat-Flash-Chat supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Haiku 5.5 and LongCat-Flash-Chat?

Key differences include LLM Stats Score (50.0 vs 19.8), context window (1.0M vs 128K), input pricing ($0.10 vs $0.30/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and LongCat-Flash-Chat?

Claude Haiku 5.5 is developed by Anthropic and LongCat-Flash-Chat is developed by Meituan.

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