All Comparisons
Claude Opus 4 vs Claude Sonnet 4
Claude Opus 4
Anthropic 🇺🇸
74.8
#59—
high$15.00/M in · $75.00/M out
200K context
Claude Sonnet 4
Anthropic 🇺🇸
68.3
#93—
high$3.00/M in · $15.00/M out
1M context
Most Affordable
Claude Sonnet 4
$3.00/M input
Largest Context
Claude Sonnet 4
1M tokens
Best Benchmark Score
Claude Opus 4
74.8/100
Model Specifications
| Spec | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Release Date | May 2025 | May 2025 |
| Knowledge Cutoff | 2025-01-31 | 2025-01-31 |
| Parameters | unknown | unknown |
| Context Window | 200K | 1M |
| Max Output | 32K | 64K |
| Open Source | No | No |
| License | proprietary | proprietary |
| Tokenizer | Claude | Claude |
| Modality | text+image+file->text | text+image+file->text |
| Reasoning Model | No | No |
| Moderated | No | Yes |
Pricing Comparison
| Price (per 1M tokens) | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| Input | $15.00 | $3.00 |
| Output | $75.00 | $15.00 |
| Cache Read | $1.50 | $0.30 |
| Cache Write | $18.75 | $3.75 |
API Provider Pricing
Capabilities
| Feature | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| Text Input | ||
| Image Input (Vision) | ||
| Audio Input | ||
| Video Input | ||
| File Input | ||
| Image Output | ||
| Audio Output | ||
| Tool Use | ||
| Structured Output (JSON) | ||
| Streaming | ||
| Reasoning Tokens | ||
| Web Search | ||
| Temperature Control | ||
| Top-P Sampling | ||
| Stop Sequences | ||
| Seed (Reproducibility) | ||
| Log Probabilities |
Category Comparison
Benchmark-by-Benchmark
general
| Benchmark | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| Chatbot Arena Elo | 1365 | 1310 |
| IFEval | 91.5 | 90.1 |
| MMLU-Pro | 83.5 | 80.2 |
coding
| Benchmark | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| SWE-bench Verified | 55.8 | 53.2 |
| HumanEval | 95.1 | 93.8 |
reasoning
| Benchmark | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| GPQA Diamond | 74.8 | 70.5 |
| BigBench-Hard | 93.2 | 90.8 |
multimodal
| Benchmark | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| MMMU | 74.2 | 72.5 |
Category Winners
coding
58.0
math
75.5
reasoning
79.3
general
96.0
multimodal
66.8