Model Comparison
Claude Haiku 4.5 vs Kimi K3Which is better in 2026?
Kimi K3 significantly outperforms across most benchmarks. Claude Haiku 4.5 is 3.0x cheaper per token.
Verdict: Claude Haiku 4.5 vs Kimi K3 — which is better?
Claude Haiku 4.5 (by Anthropic) and Kimi K3 (by Moonshot AI) 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 Haiku 4.5 outperforms in 0 benchmarks, while Kimi K3 is better at 2 benchmarks (GDPval-AA, GPQA). Kimi K3 significantly outperforms across most benchmarks.
On price, Claude Haiku 4.5 is roughly 3.0x 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.
Choose Claude Haiku 4.5 if…
- cost matters — it's about 3.0x cheaper per token
Choose Kimi K3 if…
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Jul 2026
Performance Benchmarks
Comparative analysis across standard metrics
Claude Haiku 4.5 outperforms in 0 benchmarks, while Kimi K3 is better at 2 benchmarks (GDPval-AA, GPQA).
Kimi K3 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 3.0x cheaper than Kimi K3 ($3.00/1M tokens).
For output processing, Claude Haiku 4.5 ($5.00/1M tokens) is 3.0x cheaper than Kimi K3 ($15.00/1M tokens).
In conclusion, Kimi K3 is more expensive than Claude Haiku 4.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Kimi K3 accepts 1,048,576 input tokens compared to Claude Haiku 4.5's 200,000 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Claude Haiku 4.5 is limited to 64,000 tokens.
Input Capabilities
Supported data types and modalities
Both Claude Haiku 4.5 and Kimi K3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Haiku 4.5
Kimi K3
Release Timeline
When each model was launched
Claude Haiku 4.5 was released on 2025-10-15, while Kimi K3 was released on 2026-07-16.
Kimi K3 is 9 months newer than Claude Haiku 4.5.
Oct 15, 2025
9 months ago
Jul 16, 2026
5 days ago
9mo newerKnowledge Cutoff
When training data ends
Claude Haiku 4.5 has a documented knowledge cutoff of 2025-02-01, while Kimi K3'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 Kimi K3's cutoff date.
Feb 2025
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Provider Availability
Claude Haiku 4.5 is available from Anthropic, Vertex AI. Kimi K3 is available from Moonshot AI.
Claude Haiku 4.5
Kimi K3
Outputs Comparison
Key Takeaways
Claude Haiku 4.5
View detailsAnthropic
Kimi K3
View detailsMoonshot AI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Claude Haiku 4.5 and Kimi K3 side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Claude Haiku 4.5 vs Kimi K3.