Claude Sonnet 4.6 vs GPT-4o
2026 - Pricing, benchmarks, and use case comparison
Quick take
- •Claude Sonnet 4.6 has a 200K context window - 2x larger than GPT-4o's 128K. Better for long documents and large codebases.
Specs comparison
| Claude Sonnet 4.6 | GPT-4o | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Type | Closed source | Closed source |
| Context window | ✓200K | 128K |
| Input / 1M tokens | $3.00 | ✓$2.50 |
| Output / 1M tokens | $15.00 | $10.00 |
| Release date | 2025-07 | 2024-05 |
Benchmarks
| Benchmark | Claude Sonnet 4.6 | GPT-4o |
|---|---|---|
| SWE-bench Verified | ~49% | - |
| MMLU | ~88% | 88.7% |
| HumanEval | ~93% | 90.2% |
| GPQA | - | 53.6% |
Scores sourced from official provider release posts.
Strengths
Claude Sonnet 4.6
- ✓Strong coding and debugging across most languages
- ✓Excellent at following multi-step instructions
- ✓200K context handles entire codebases
- ✓Fast enough for interactive use cases
- ✓Solid function calling and structured output
GPT-4o
- ✓Native multimodal input (text, image, audio)
- ✓Fast response times at this capability level
- ✓Strong on structured data and JSON output
- ✓Best ecosystem support across SDKs and tools
- ✓Real-time audio capabilities
Which should you choose?
Choose Claude Sonnet 4.6 if you need...
- →Production API integrations
- →Coding assistants and IDEs
- →Document analysis
- →Agentic workflows
Choose GPT-4o if you need...
- →Multimodal apps
- →High-volume production use
- →Chatbots and assistants
- →Structured data extraction