Claude 3.5 Sonnet vs o3
| Claude 3.5 Sonnet | o3 | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context Window | 200,000 | 200,000 |
| Release Date | 2024-06-20 | 2025-04-16 |
| Input Price | $3.00/ 1M tokens | $2.00/ 1M tokens |
| Output Price | $15.00/ 1M tokens | $8.00/ 1M tokens |
| Best for | coding · writing · chatbot · analysis | mathematics · coding · scientific reasoning · complex planning |
Capabilities
| Claude 3.5 Sonnet | o3 | |
|---|---|---|
| Vision | ✓ | ✗ |
| Reasoning | ✓ | ✓ |
| Coding | ✓ | ✓ |
| Audio | ✗ | ✗ |
| Tools | ✓ | ✓ |
| Long Context | ✓ | ✓ |
Ranking Comparison
| Claude 3.5 Sonnet | o3 | |
|---|---|---|
| Overall | 47.1 | 87.9 |
| Benchmark | 0 | 93 |
| Capability | 85.7 | 57.1 |
| Price Efficiency | 100 | 100 |
| Context | 100 | 100 |
Overall = Benchmark 50% + Capability 20% + Price Efficiency 20% + Context 10%.
Benchmark Comparison
| Claude 3.5 Sonnet | o3 | |
|---|---|---|
| Coding | — | — |
| Reasoning | — | — |
| Math | — | — |
| Vision | — | — |
Price History
Claude 3.5 Sonnet
| Date | Input | Output |
|---|---|---|
| 2026-08-05 | $3.00 | $15.00 |
/ 1M tokens
o3
| Date | Input | Output |
|---|---|---|
| 2026-08-05 | $2.00 | $8.00 |
/ 1M tokens
Claude 3.5 Sonnet
Anthropic's flagship model known for strong coding and nuanced writing.
o3
OpenAI reasoning model that thinks before answering, strongest on STEM and logic.