Claude Sonnet 4.5 vs Grok 4
Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.
A
Claude Sonnet 4.5
Anthropic
X
Grok 4
xAI
Capability radar
Normalized coding, reasoning, writing, vision, context, and value
Claude Sonnet 4.5Grok 4
| Metric | Claude Sonnet 4.5 | Grok 4 |
|---|---|---|
| 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 | 256,000 |
| Coding Score | 95 | 90 |
| Reasoning Score | 93 | 91 |
| Vision Score | 88 | 85 |
| Audio | No | No |
| Streaming | Yes | Yes |
| Function Calling | Yes | Yes |
| Latency Tier | fast | fast |
| Release Date | 6/15/2026 | 4/9/2026 |
Claude Sonnet 4.5 — Strengths & Weaknesses
Strengths
- Coding excellence
- Speed/quality balance
- Strong agents
Weaknesses
- Below Opus on hardest analysis
Grok 4 — Strengths & Weaknesses
Strengths
- Real-time knowledge angle
- Fast
- Tool use
Weaknesses
- Smaller ecosystem than OpenAI/Anthropic
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.