Claude Haiku 5.5 vs Kimi K2.8 Preview
Comparing Claude Haiku 5.5 and Kimi K2.8 Preview across benchmarks, pricing, and capabilities.
Anthropic · Moonshot AI · Updated for 2026
Which is better?
Claude Haiku 5.5 and Kimi K2.8 Preview trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
Kimi K2.8 Preview 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
- you want the most recent training data — it shipped Oct 2026
Choose Kimi K2.8 Preview
- you process long inputs — it offers a 1,048,576 token context window
At a glance
The differences that matter most.
Individual benchmarks
36 reported for Claude Haiku 5.5 · 0 for Kimi K2.8 Preview
Claude Haiku 5.5 and Kimi K2.8 Previewdon'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
Context Window
Maximum input and output token capacity
Kimi K2.8 Preview accepts 1,048,576 input tokens compared to Claude Haiku 5.5's 1,000,000 tokens. Only Claude Haiku 5.5 specifies output context (128,000 tokens).
Input capabilities
Documented input modalities across available providers
Both Claude Haiku 5.5 and Kimi K2.8 Preview support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Haiku 5.5
Kimi K2.8 Preview
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Haiku 5.5 was released on 2026-10-07, while Kimi K2.8 Preview was released on 2026-09-11.
Claude Haiku 5.5 is 1 month newer than Kimi K2.8 Preview.
Oct 7, 2026
2 weeks ago
3w newerSep 11, 2026
1 months ago
Knowledge Cutoff
When training data ends
Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while Kimi K2.8 Preview'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 K2.8 Preview's cutoff date.
Jun 2026
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Provider Availability
Claude Haiku 5.5 is available from Anthropic. Kimi K2.8 Preview is available from Moonshot AI.
Claude Haiku 5.5
Kimi K2.8 Preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Haiku 5.5 and Kimi K2.8 Preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Haiku 5.5 vs Kimi K2.8 Preview.