Claude Sonnet 4 vs GPT-4o
Side-by-side API pricing and capability comparison
Anthropic
Claude Sonnet 4
Best balance of intelligence and speed. Ideal for agentic workflows, coding, and data analysis.
Input /1M
$3.00
Output /1M
$15.00
Context
200K
Tier
efficient
Prompt caching: $0.300/1M input
Full Claude Sonnet 4 pricing →OpenAI
GPT-4o
OpenAI's flagship multimodal model — combines speed, intelligence, and vision capabilities.
Input /1M
$2.50
Output /1M
$10.00
Context
128K
Tier
efficient
Prompt caching: $1.25/1M input
Full GPT-4o pricing →Monthly Cost Comparison
| Usage scenario | Claude Sonnet 4 | GPT-4o | Cheaper by |
|---|---|---|---|
Light usage 50K in + 20K out /day | $13.50 | $9.75 | GPT-4o 28% cheaper |
Medium usage 500K in + 150K out /day | $112.50 | $82.50 | GPT-4o 27% cheaper |
Heavy usage 3000K in + 1000K out /day | $720.00 | $525.00 | GPT-4o 27% cheaper |
Feature Comparison
When to Use Each
Choose Claude Sonnet 4 when:
- You need a larger context window (200K vs 128K)
- Extended reasoning is required
- You prefer Anthropic's ecosystem and tooling
Choose GPT-4o when:
- Cost efficiency is critical — 17% cheaper input
- You prefer OpenAI's ecosystem and tooling
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