Claude Sonnet 4.5 vs Grok 4.20 Multi-Agent
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Claude Sonnet 4.5 vs Grok 4.20 Multi-Agent: side by side
| Spec | Claude Sonnet 4.5 | Grok 4.20 Multi-Agent | Winner |
|---|---|---|---|
| Intelligence | — | — | Tie |
| Output speed | — | — | Tie |
| Output price | $15.00/1M | $6.00/1M | Grok 4.20 Multi-Agent |
| Context | 1000K | 2000K | Grok 4.20 Multi-Agent |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | Anthropic | xAI | Tie |
Claude Sonnet 4.5
Pros
- +Strong safety alignment
- +Reliable handling of large contexts
- +Careful and detailed reasoning
- +Effective multimodal file support
Cons
- –Can be overly cautious with refusals
- –Vision performance varies by image complexity
- –May produce verbose responses
Grok 4.20 Multi-Agent
Pros
- +Supports extremely long contexts
- +Coordinates multiple agents for workflows
- +Handles text, images, and files natively
Cons
- –Multi-agent setups may add latency
- –Coordination overhead on simple tasks
- –No audio or video modalities
Frequently asked questions
It depends on your needs. Claude Sonnet 4.5 and Grok 4.20 Multi-Agent are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.