Claude Haiku 5.5 vs Kimi K3

Claude Haiku 5.5 and Kimi K3 are closely matched at 50.0 and 52.1 on the LLM Stats Score. Claude Haiku 5.5 is 28.5x cheaper per token.

Anthropic · Moonshot AI · Updated for 2026

Which is better?

Claude Haiku 5.5 and Kimi K3 are closely matched on the overall LLM Stats Score at 50.0 and 52.1.

The models split the 2 individual benchmarks reported for both models evenly.

On price, Claude Haiku 5.5 is roughly 28.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Kimi K3 also accepts a larger context window (1,048,576 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

cost matters — it's about 28.5x cheaper per token
you want the most recent training data — it shipped Oct 2026

Choose Kimi K3

you process long inputs — it offers a 1,048,576 token context window
you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Better token value: Claude Haiku 5.5

Core performance indexes

LLM Stats Score

50.0

#19 · 25 evals

52.1

#12 · 26 evals

Best

Reasoning

47.2

#27 · 19 evals

51.0

#10 · 20 evals

Best

Coding

40.2

#13 · 11 evals

41.1

#9 · 9 evals

Best

Agents

33.3

#28 · 14 evals

37.4

#13 · 17 evals

Best

Cost, coverage & limits

Benchmark wins

1 of 2

Input price

$0.10 / M

Best

$2.85 / M

Output price

$0.50 / M

Best

$14.25 / M

Context window

1,000,000

1,048,576

Best

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared

Index

Claude Haiku 5.5

Kimi K3

Math

25.7#110 · 2 evals

40.9#11 · 2 evals

Vision

30.4#33 · 6 evals

35.9#11 · 8 evals

Tool use

20.3#59 · 2 evals

30.5#7 · 4 evals

Multimodal

31.4#27 · 5 evals

37.5#5 · 7 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 31 for Kimi K3

2 shared

Claude Haiku 5.5 outperforms in 1 benchmarks (Program Bench), while Kimi K3 is better at 1 benchmark (OfficeQA Pro).

Both models are evenly matched across the benchmarks.

Mon Oct 12 2026 • llm-stats.com

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 28.5x cheaper than Kimi K3 ($2.85/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 28.5x cheaper than Kimi K3 ($14.25/1M tokens).

In conclusion, Kimi K3 is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers

Mon Oct 12 2026 • llm-stats.com

Claude Haiku 5.5

Input tokens$0.10

Output tokens$0.50

Best providerAnthropic

Kimi K3

Input tokens$2.85

Output tokens$14.25

Best providerDeepinfra

Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Kimi K3 accepts 1,048,576 input tokens compared to Claude Haiku 5.5's 1,000,000 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Claude Haiku 5.5 is limited to 128,000 tokens.

Claude Haiku 5.5

Input1,000,000 tokens

Output128,000 tokens

Kimi K3

Input1,048,576 tokens

Output1,048,576 tokens

Mon Oct 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Haiku 5.5 and Kimi K3 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Haiku 5.5

Text

Images

Audio

Video

Kimi K3

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Haiku 5.5 is licensed under a proprietary license, while Kimi K3 uses Kimi K3 License.

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

Claude Haiku 5.5

Proprietary

Closed source

Kimi K3

Kimi K3 License

Open weights

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while Kimi K3 was released on 2026-07-16.

Claude Haiku 5.5 is 3 months newer than Kimi K3.

Claude Haiku 5.5

Oct 7, 2026

5 days ago

2mo newer

Kimi K3

Jul 16, 2026

2 months ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while Kimi K3'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 Kimi K3's cutoff date.

Claude Haiku 5.5

Jun 2026

Kimi K3

—

Provider Availability

Claude Haiku 5.5 is available from Anthropic. Kimi K3 is available from DeepInfra, Fireworks, Moonshot AI, Novita, Together.

Claude Haiku 5.5

Anthropic

Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

Kimi K3

Deepinfra

Input Price:Input: $2.85/1MOutput Price:Output: $14.25/1M

Fireworks

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Unknown Organization

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Novita

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Together

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

* 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 Kimi K3 side-by-side, then vote on the output you prefer.

Claude Haiku 5.5

✓ Preferred

Kimi K3

Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs Kimi K3.

Which is better, Claude Haiku 5.5 or Kimi K3?

Claude Haiku 5.5 and Kimi K3 are closely matched on the LLM Stats Score at 50.0 and 52.1. Claude Haiku 5.5 is made by Anthropic and Kimi K3 is made by Moonshot AI. 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 Kimi K3 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%. Kimi K3 scores MathVision: 97.8%, DeepSearchQA: 95.0%, GPQA: 93.5%, CharXiv-R: 91.3%, BrowseComp: 91.2%.

Is Claude Haiku 5.5 cheaper than Kimi K3?

Claude Haiku 5.5 is 28.5x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/M output via anthropic. Kimi K3 costs $2.85/M input and $14.25/M output via deepinfra.

What are the context window sizes for Claude Haiku 5.5 and Kimi K3?

Claude Haiku 5.5 supports 1.0M tokens and Kimi K3 supports 1.0M 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 Kimi K3?

Key differences include LLM Stats Score (50.0 vs 52.1), context window (1.0M vs 1.0M), input pricing ($0.10 vs $2.85/M), licensing (Proprietary vs Kimi K3 License). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and Kimi K3?

Claude Haiku 5.5 is developed by Anthropic and Kimi K3 is developed by Moonshot AI.

Claude Haiku 5.5 vs Kimi K3