Claude 4 Sonnet vs Claude Sonnet 4.5
Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.
A
Claude 4 Sonnet
Anthropic
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Claude Sonnet 4.5
Anthropic
Capability radar
Normalized coding, reasoning, writing, vision, context, and value
Claude 4 SonnetClaude Sonnet 4.5
| Metric | Claude 4 Sonnet | Claude Sonnet 4.5 |
|---|---|---|
| Input Price / 1M | $3.00 | $3.00 |
| Output Price / 1M | $15.00 | $15.00 |
| Combined Price / 1M | $18.00 | $18.00 |
| Context Window | 200,000 | 200,000 |
| Coding Score | 96 | 95 |
| Reasoning Score | 94 | 93 |
| Vision Score | 92 | 88 |
| Audio | No | No |
| Streaming | Yes | Yes |
| Function Calling | Yes | Yes |
| Latency Tier | standard | fast |
| Release Date | 5/22/2025 | 6/15/2026 |
Claude 4 Sonnet — Strengths & Weaknesses
Strengths
- State-of-art coding
- Strong agents
- Reliable outputs
Weaknesses
- Premium tier pricing
Claude Sonnet 4.5 — Strengths & Weaknesses
Strengths
- Coding excellence
- Speed/quality balance
- Strong agents
Weaknesses
- Below Opus on hardest analysis
Use Case Verdicts
Enterprise Use
Claude 4 Sonnet combines strong reasoning, tooling, and context for enterprise workloads.
Agent Workflows
Claude 4 Sonnet is better suited for agentic workflows with tool use and coding capability.