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Claude Sonnet 4 vs Phi 4
Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 19.3% higher average benchmark score. Claude Sonnet 4 offers 296.0K more tokens in context window than Phi 4. Phi 4 is $17.79 cheaper per million tokens. Claude Sonnet 4 supports multimodal inputs. Claude Sonnet 4 is available on 4 providers. Overall, Claude Sonnet 4 is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4 was created as the balanced offering in the Claude 4 family, designed to provide strong intelligence with practical speed and cost efficiency. Built to serve as a versatile workhorse for diverse applications, it balances advanced capabilities with operational considerations for everyday enterprise and consumer use.
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Microsoft
Phi-4 was introduced as the fourth generation of Microsoft's small language model series, designed to push the boundaries of what compact models can achieve. Built with advanced training techniques and architectural improvements, it demonstrates continued progress in efficient, high-quality language models.
5 months newer
Phi 4
Microsoft
2024-12-12
Claude Sonnet 4
Anthropic
2025-05-22
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Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4
Input:$3.00
Output:$15.00
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Phi 4
Input:$0.07
Output:$0.14($17.79 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Sonnet 4
Average Score:75.4%(+19.3%)
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Phi 4
Average Score:56.1%
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Knowledge Cutoff
Training data recency comparison
Phi 4
2024-06-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Sonnet 4
4 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
Bedrock
Throughput: 101 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Sonnet 4
Avg Score:75.4%(+19.3%)
Providers:4
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Phi 4
Avg Score:56.1%
Providers:1