Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking: The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking Showdown

After a comprehensive analysis, Claude Opus 4.5 (Reasoning) emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Kimi K2 Thinking remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking comparison will break down every critical metric to help you make the best decision.

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Model Snapshot

Key decision metrics at a glance.

Claude Opus 4.5 (Reasoning)

Anthropic

Reasoning: 9
Coding: 5
Multimodal: 4
Long Context: 6
Blended Price / 1M tokens: $0.010
P95 Latency: 1000ms
Tokens per second: 82.635tokens/sec

Kimi K2 Thinking

Other

Reasoning: 9
Coding: 3
Multimodal: 3
Long Context: 5
Blended Price / 1M tokens: $0.001
P95 Latency: 1000ms
Tokens per second: 97.439tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Claude Opus 4.5 (Reasoning)` vs `Kimi K2 Thinking`.

Benchmark Breakdown

For a granular look, this chart directly compares scores across standardized benchmarks. In the critical MMLU Pro test, a key part of the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking debate, Claude Opus 4.5 (Reasoning) scores 90 against Kimi K2 Thinking's 90. This data-driven approach is essential for any serious Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking comparison.

This grouped bar chart provides a side-by-side comparison for each benchmark metric.

Speed & Latency

Speed is a crucial factor in the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

Claude Opus 4.5 (Reasoning)300ms

Kimi K2 Thinking300ms

Tokens per Second

Claude Opus 4.5 (Reasoning)82.635

Kimi K2 Thinking97.439

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The Economics of Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking

Power is only one part of the equation. This Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking pricing analysis gives you a true sense of value.

Pricing Breakdown

Compare input and output pricing at a glance.

Real-World Cost Scenario

To process 1M input tokens and generate 250k output tokens, Claude Opus 4.5 (Reasoning) would cost $0.011, whereas Kimi K2 Thinking would cost $0.001. This practical calculation is vital for any developer considering the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking choice.

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Which Model Wins the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking Battle for You?

Choose Claude Opus 4.5 (Reasoning) if...

Your top priority is raw performance and capability.

Cost is a secondary concern to power in your Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking decision.

You need the most advanced reasoning capabilities available.

Choose Kimi K2 Thinking if...

You need a highly responsive model for user-facing applications.

Your budget is a primary consideration in the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking choice.

You are developing at scale where operational costs are critical.

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Your Questions about the Claude Opus 4.5 (Reasoning) vs Kimi K2 Thinking Comparison

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Data source: https://artificialanalysis.ai/