Claude Sonnet 4.6 vs GPT-4o
Which AI is best for coding in 2026? Compare Claude Sonnet and GPT-4o on benchmarks, pricing, IDE integration, and real-world developer workflows.
Professional software development and code review
Pricing (per 1M tokens)
Key Strengths
- Highest scores on SWE-bench and coding benchmarks
- Claude Code CLI for agentic software engineering
- Excellent at understanding complex codebases
Claude Sonnet leads the coding benchmarks in 2026 and offers the best pure code generation quality, especially for complex software engineering tasks. GPT-4o is a strong alternative with its Copilot integration and broader IDE ecosystem. Most professional developers will prefer Claude Sonnet; teams already invested in GitHub Copilot may prefer sticking with GPT-4o.
Quick Comparison
| Feature | Claude Sonnet 4.6 | GPT-4o |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price / 1M tokens | $3 | $5 |
| Output Price / 1M tokens | $15 | $15 |
| Context Window | 200K | 128K |
| Best For | Professional software development and code review | Full-stack development and IDE-integrated workflows |
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Disclaimer: Prices and features current as of February 2026. Check provider websites for latest pricing. Actual costs may vary based on usage tier, commitment discounts, and regional availability.