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Claude Haiku 4.5 vs Kimi K2.5

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Haiku 4.5 and Kimi K2.5.

Anthropic

Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...

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Moonshot AI

Kimi K2.5

Kimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed...

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Technical Specifications

SpecificationClaude Haiku 4.5Kimi K2.5
ProviderAnthropicMoonshot AI
Context Window200,000 tokens262,144 tokens
Agent Suitability87/100N/A
Time to First Token (TTFT)180 msN/A
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-10-152026-01-27

API Pricing Comparison

Input Price per Million Tokens

Claude Haiku 4.5

$1.00

Kimi K2.5

$0.38

Output Price per Million Tokens

Claude Haiku 4.5

$5.00

Kimi K2.5

$2.02

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
8480.0%vs8250.0%
Claude Haiku 4.5
Kimi K2.5
HumanEvalPython coding & logic synthesis
8600.0%vs8300.0%
Claude Haiku 4.5
Kimi K2.5
MATHComplex mathematical problem solving
7500.0%vs5900.0%
Claude Haiku 4.5
Kimi K2.5
GPQAGraduate-level expert reasoning
5500.0%vs4100.0%
Claude Haiku 4.5
Kimi K2.5
HellaSwagCommonsense reasoning and inference
9350.0%vs8400.0%
Claude Haiku 4.5
Kimi K2.5
MT-BenchMulti-turn conversation flow quality
890.0%vs880.0%
Claude Haiku 4.5
Kimi K2.5

Claude Haiku 4.5 Quirks & Gotchas

  • Fastest TTFT in the Claude lineup — ideal for real-time chat
  • Tool calling limited compared to Sonnet — best for simple classification and routing

Kimi K2.5 Quirks & Gotchas

No developer gotchas reported.