Claude Sonnet 4 vs GPT-4o — API Pricing Comparison 2026
Compare Claude Sonnet 4 and GPT-4o API pricing across all providers. See input, output, and blended costs side by side with context windows and quality tiers.
$6.00
Claude Sonnet 4 cheapest
$4.38
GPT-4o cheapest
1M
Claude Sonnet 4 context
128K
GPT-4o context
Which is cheaper, Claude Sonnet 4 or GPT-4o?
GPT-4o is cheaper at $4.38/1M tokens via OpenAI, compared to Claude Sonnet 4 at $6.00/1M via Anthropic. 1 providers offer both models.
Model Specifications
| Spec | Claude Sonnet 4 | GPT-4o |
|---|---|---|
| Type | chat | chat |
| Parameters | — | — |
| Context Window | 1M | 128K |
| Arena ELO | 1300 | 1286 |
| Quality Tier | Frontier | Frontier |
| Open Weight | No | No |
| Cheapest Price | $6.00/1M | $4.38/1M |
| Cheapest Provider | Anthropic | OpenAI |
| Providers | 4 | 4 |
Price Comparison by Provider
7 providers| Provider | Claude Sonnet 4 Input/1M | Claude Sonnet 4 Output/1M | GPT-4o Input/1M | GPT-4o Output/1M |
|---|---|---|---|---|
| Anthropic | $3.00 | $15.00 | — | — |
| AWS Bedrock | $3.00 | $15.00 | — | — |
| Azure OpenAI | — | — | $2.75 | $11.00 |
| Google Vertex AI | $3.00 | $15.00 | — | — |
| OpenAI | — | — | $2.50 | $10.00 |
| OpenRouter | $3.60 | $18.00 | $7.20 | $21.60 |
| Replicate | — | — | $2.50 | $10.00 |
Prices in USD per 1M tokens. Green highlights the cheaper model at each provider. Updated every 6 hours.
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Frequently Asked Questions
GPT-4o is cheaper at $4.38/1M tokens (via OpenAI) compared to Claude Sonnet 4 at $6.00/1M tokens (via Anthropic). Prices vary by provider — Sector HQ tracks them all.
Prices in USD per 1M tokens. Updated every 6 hours.