Claude 4 Haiku vs Claude Sonnet 4.5
Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.
A
Claude 4 Haiku
Anthropic
A
Claude Sonnet 4.5
Anthropic
Capability radar
Normalized coding, reasoning, writing, vision, context, and value
Claude 4 HaikuClaude Sonnet 4.5
| Metric | Claude 4 Haiku | Claude Sonnet 4.5 |
|---|---|---|
| Input Price / 1M | $0.80 | $3.00 |
| Output Price / 1M | $4.00 | $15.00 |
| Combined Price / 1M | $4.80 | $18.00 |
| Context Window | 200,000 | 200,000 |
| Coding Score | 83 | 95 |
| Reasoning Score | 84 | 93 |
| Vision Score | 78 | 88 |
| Audio | No | No |
| Streaming | Yes | Yes |
| Function Calling | Yes | Yes |
| Latency Tier | fast | fast |
| Release Date | 5/22/2025 | 6/15/2026 |
Claude 4 Haiku — Strengths & Weaknesses
Strengths
- Fast and cheap
- Improved over 3.5 Haiku
Weaknesses
- Not for hardest reasoning tasks
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 Sonnet 4.5 combines strong reasoning, tooling, and context for enterprise workloads.
Agent Workflows
Claude Sonnet 4.5 is better suited for agentic workflows with tool use and coding capability.