Updated March 25, 2026· Based on independent benchmark data
Anthropic: Claude Opus 4 and Anthropic: Claude Sonnet 4 are virtually tied on intelligence (53.0 vs 51.7). Anthropic: Claude Sonnet 4 is 5.0x cheaper at $3.00/1M tokens vs $15/1M. For speed, Anthropic: Claude Sonnet 4 wins at 65 tok/s vs 48 tok/s.
| Metric | Anthropic: Claude Opus 4 | Anthropic: Claude Sonnet 4 |
|---|---|---|
| Intelligence Score | 53.0 | 51.7 |
| Coding Score | 48.1 | 50.9 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 48 tok/s | 65 tok/s |
| Latency (TTFT) | 11.42s | 38.68s |
| Input Price / 1M tokens | $15 | $3.00 |
| Output Price / 1M tokens | $75 | $15 |
| Context Window | 200K |
Anthropic: Claude Opus 4 and Anthropic: Claude Sonnet 4 perform similarly on overall intelligence, scoring 53.0 and 51.7 respectively. For coding tasks, Anthropic: Claude Sonnet 4 has the edge with a coding score of 50.9 vs 48.1.
Anthropic: Claude Sonnet 4 generates output significantly faster at 65 tok/s compared to Anthropic: Claude Opus 4's 48 tok/s, making it 1.4x faster for streaming responses. Time to first token is 11.42s for Anthropic: Claude Opus 4 vs 38.68s for Anthropic: Claude Sonnet 4, which affects perceived responsiveness in interactive applications.
Anthropic: Claude Sonnet 4 is more affordable at $3.00/1M input tokens ($15/1M output), while Anthropic: Claude Opus 4 costs $15/1M input ($75/1M output). That makes Anthropic: Claude Opus 4 5.0x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, Anthropic: Claude Opus 4 would cost approximately $90.00/month vs $18.00/month for Anthropic: Claude Sonnet 4 in input costs alone.
Both models support the same context window of 200K tokens (approximately 100 pages of text). For output length, Anthropic: Claude Sonnet 4 can generate up to 64K tokens per response vs 32K for Anthropic: Claude Opus 4.
Choose Anthropic: Claude Sonnet 4 when you need stronger coding performance (50.9), faster output (65 tok/s), lower cost.
Anthropic: Claude Sonnet 4 scores higher on coding benchmarks (50.9 vs 48.1), making it the better choice for programming tasks.
Anthropic: Claude Sonnet 4 is cheaper at $3.00/1M input tokens vs $15/1M for Anthropic: Claude Opus 4.
Anthropic: Claude Sonnet 4 is faster, producing output at 65 tok/s compared to Anthropic: Claude Opus 4's 48 tok/s.
Yes, Anthropic: Claude Opus 4 supports image input. Anthropic: Claude Sonnet 4 also supports images.
Benchmark data by Artificial Analysis
Data last synced: March 25, 2026
| 200K |
| Max Output Tokens | 32K | 64K |
| Input Modalities | Image + Text + File | Image + Text + File |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Both models have the same context window of 200K tokens.
Both models perform similarly on intelligence benchmarks. Choose based on specific needs: pricing, speed, context window, or provider ecosystem.