Claude 3.5 Sonnet vs Claude 3 Opus
A side-by-side comparison of two Frontier LLM models - to help you pick the right one.
Claude 3.5 Sonnet
Anthropic
Claude 3.5 Sonnet is Anthropic's balanced frontier large language model with vision capabilities. It excels at coding, analysis, and agentic tool use, and supports both text and image inputs.
Claude 3 Opus
Anthropic
Claude 3 Opus is Anthropic's most capable frontier LLM, designed for complex, open-ended reasoning tasks. It supports both text and vision modalities and handles contexts up to 200,000 tokens.
Spec comparison
| Claude 3.5 Sonnet | Claude 3 Opus | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Category | Frontier LLM | Frontier LLM |
| Context window | 200K ctx | 200K ctx |
| Max output | 8K ctx | 4K ctx |
| Input price | $3 / 1M | $15 / 1M |
| Output price | $15 / 1M | $75 / 1M |
| License | Proprietary | Proprietary |
| Open weights | No | No |
| Modality | Text, Vision | Text, Vision |
Prices and specs are per provider documentation; verify current figures before relying on them.
Claude 3.5 Sonnet: what it's for
Claude 3.5 Sonnet is Anthropic's balanced frontier large language model with vision capabilities. It excels at coding, analysis, and agentic tool use, and supports both text and image inputs.
Claude 3 Opus: what it's for
Claude 3 Opus is Anthropic's most capable frontier LLM, designed for complex, open-ended reasoning tasks. It supports both text and vision modalities and handles contexts up to 200,000 tokens.