Claude Haiku 4.5 vs Phi 4 Reasoning Comparison
Comparing Claude Haiku 4.5 and Phi 4 Reasoning across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Claude Haiku 4.5 outperforms in 2 benchmarks (AIME 2025, GPQA), while Phi 4 Reasoning is better at 0 benchmarks.
Claude Haiku 4.5 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
Cost data unavailable.
Context Window
Maximum input and output token capacity
Only Claude Haiku 4.5 specifies input context (200,000 tokens). Only Claude Haiku 4.5 specifies output context (64,000 tokens).
Input Capabilities
Supported data types and modalities
Claude Haiku 4.5 supports multimodal inputs, whereas Phi 4 Reasoning does not.
Claude Haiku 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Haiku 4.5
Phi 4 Reasoning
License
Usage and distribution terms
Claude Haiku 4.5 is licensed under a proprietary license, while Phi 4 Reasoning uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
Claude Haiku 4.5 was released on 2025-10-15, while Phi 4 Reasoning was released on 2025-04-30.
Claude Haiku 4.5 is 6 months newer than Phi 4 Reasoning.
Oct 15, 2025
5 months ago
5mo newerApr 30, 2025
10 months ago
Knowledge Cutoff
When training data ends
Claude Haiku 4.5 has a knowledge cutoff of 2025-02-01, while Phi 4 Reasoning has a cutoff of 2025-03-01.
Phi 4 Reasoning has more recent training data (up to 2025-03-01), making it potentially better informed about events through that date compared to Claude Haiku 4.5 (2025-02-01).
Feb 2025
Mar 2025
1 mo newerOutputs Comparison
Key Takeaways
Claude Haiku 4.5
View detailsAnthropic
Phi 4 Reasoning
View detailsMicrosoft
Detailed Comparison
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