Claude 3.5 Sonnet vs o3-mini (Reasoning)
Compare Claude 3.5 Sonnet vs o3-mini (Reasoning) API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
Claude 3.5 Sonnet charges $3.00/1M input and $15.00/1M output tokens, compared to o3-mini (Reasoning) at $1.10/1M input and $4.40/1M output. o3-mini (Reasoning) is 2.7x cheaper on input tokens. In benchmark reasoning, Claude 3.5 Sonnet holds the higher intelligence rating (94/100). For latency-critical streaming, Claude 3.5 Sonnet delivers 80 t/s (460ms TTFT) while o3-mini (Reasoning) provides 95 t/s (580ms TTFT).
Full Metric & Specification Comparison
| Metric | Claude 3.5 Sonnet | o3-mini (Reasoning) | Advantage |
|---|---|---|---|
| Provider | Anthropic | OpenAI | - |
| Input Token Cost (1M) | $3.000 | $1.100 | o3-mini (Reasoning) |
| Output Token Cost (1M) | $15.000 | $4.400 | o3-mini (Reasoning) |
| Context Window | 200k tokens | 200k tokens | Tie |
| Intelligence Benchmark Score | 94/100 | 93/100 | Claude 3.5 Sonnet |
| Streaming Latency | Fast | Fast | - |
Key Architectural Takeaways
- Input Token Cost: Claude 3.5 Sonnet is $3.00/1M vs o3-mini (Reasoning) at $1.10/1M
- Output Token Cost: Claude 3.5 Sonnet is $15.00/1M vs o3-mini (Reasoning) at $4.40/1M
- Context Window: Claude 3.5 Sonnet supports 200k tokens vs o3-mini (Reasoning) with 200k tokens
- Benchmark Intelligence Rating: Claude 3.5 Sonnet scores 94/100 vs o3-mini (Reasoning) at 93/100
- Inference Latency: Claude 3.5 Sonnet is rated Fast vs o3-mini (Reasoning) rated Fast
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying o3-mini (Reasoning) over Claude 3.5 Sonnet saves $108.00/mo ($1296/yr) at this volume.
Frequently Asked Questions
Is Claude 3.5 Sonnet cheaper than o3-mini (Reasoning)?
o3-mini (Reasoning) is significantly more economical, charging $1.10/1M input compared to $3.00/1M for Claude 3.5 Sonnet.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose o3-mini (Reasoning). If you require peak reasoning accuracy and complex tool use, Claude 3.5 Sonnet is recommended.
How does context window compare between Claude 3.5 Sonnet and o3-mini (Reasoning)?
Claude 3.5 Sonnet offers the larger context window (200k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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