Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 38.0% higher average benchmark score. Claude Sonnet 4 offers 72.0K more tokens in context window than Phi-3.5-mini-instruct. Phi-3.5-mini-instruct is $17.80 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.
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.
Microsoft
Phi-3.5 Mini was developed by Microsoft as a small language model designed to deliver impressive performance despite its compact size. Built with efficiency in mind, it demonstrates that capable language understanding and generation can be achieved with fewer parameters, making AI more accessible for edge and resource-constrained deployments.
9 months newer

Phi-3.5-mini-instruct
Microsoft
2024-08-23

Claude Sonnet 4
Anthropic
2025-05-22
Cost per million tokens (USD)

Claude Sonnet 4

Phi-3.5-mini-instruct
Context window and performance specifications
Average performance across 2 common benchmarks

Claude Sonnet 4

Phi-3.5-mini-instruct
Available providers and their performance metrics

Claude Sonnet 4
Anthropic
Bedrock
ZeroEval

Claude Sonnet 4

Phi-3.5-mini-instruct

Claude Sonnet 4

Phi-3.5-mini-instruct

Phi-3.5-mini-instruct
Azure