Claude Sonnet 4.5 vs DeepSeek V4
Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.
A
Claude Sonnet 4.5
Anthropic
D
DeepSeek V4
DeepSeek
Capability radar
Normalized coding, reasoning, writing, vision, context, and value
Claude Sonnet 4.5DeepSeek V4
| Metric | Claude Sonnet 4.5 | DeepSeek V4 |
|---|---|---|
| Input Price / 1M | $3.00 | $0.30 |
| Output Price / 1M | $15.00 | $1.20 |
| Combined Price / 1M | $18.00 | $1.50 |
| Context Window | 200,000 | 163,840 |
| Coding Score | 95 | 92 |
| Reasoning Score | 93 | 90 |
| Vision Score | 88 | 35 |
| Audio | No | No |
| Streaming | Yes | Yes |
| Function Calling | Yes | Yes |
| Latency Tier | fast | fast |
| Release Date | 6/15/2026 | 6/1/2026 |
Claude Sonnet 4.5 — Strengths & Weaknesses
Strengths
- Coding excellence
- Speed/quality balance
- Strong agents
Weaknesses
- Below Opus on hardest analysis
DeepSeek V4 — Strengths & Weaknesses
Strengths
- Very low cost
- Strong coding
- Open-weight path
Weaknesses
- Weaker multimodal
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.