Claude Sonnet 4.6 vs GPT-4o (2024-11-20)
Claude Sonnet 4.6 (2026) and GPT-4o (2024-11-20) (2024) are frontier reasoning models from Anthropic and OpenAI. Claude Sonnet 4.6 ships a 1M-token context window, while GPT-4o (2024-11-20) ships a 128K-token context window. On pricing, GPT-4o (2024-11-20) costs $2.5/1M input tokens versus $3/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Claude Sonnet 4.6 fits 8x more tokens; pick it for long-context work and GPT-4o (2024-11-20) for tighter calls.
Specs
| Released | 2026-02-17 | 2024-11-20 |
| Context window | 1M | 128K |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Unknown |
| Knowledge cutoff | 2025-12 | - |
Pricing and availability
| Claude Sonnet 4.6 | GPT-4o (2024-11-20) | |
|---|---|---|
| Input price | $3/1M tokens | $2.5/1M tokens |
| Output price | $15/1M tokens | $10/1M tokens |
| Providers |
Capabilities
| Claude Sonnet 4.6 | GPT-4o (2024-11-20) | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Claude Sonnet 4.6, multimodal input: Claude Sonnet 4.6, reasoning mode: Claude Sonnet 4.6, function calling: Claude Sonnet 4.6, tool use: Claude Sonnet 4.6, and code execution: Claude Sonnet 4.6. Both models share structured outputs, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, Claude Sonnet 4.6 lists $3/1M input and $15/1M output tokens, while GPT-4o (2024-11-20) lists $2.5/1M input and $10/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts GPT-4o (2024-11-20) lower by about $1.85 per million blended tokens. Availability is 4 providers versus 2, so concentration risk also matters.
Choose Claude Sonnet 4.6 when coding workflow support, larger context windows, and broader provider choice are central to the workload. Choose GPT-4o (2024-11-20) when provider fit and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions.
FAQ
Which has a larger context window, Claude Sonnet 4.6 or GPT-4o (2024-11-20)?
Claude Sonnet 4.6 supports 1M tokens, while GPT-4o (2024-11-20) supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Claude Sonnet 4.6 or GPT-4o (2024-11-20)?
GPT-4o (2024-11-20) is cheaper on tracked token pricing. Claude Sonnet 4.6 costs $3/1M input and $15/1M output tokens. GPT-4o (2024-11-20) costs $2.5/1M input and $10/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Claude Sonnet 4.6 or GPT-4o (2024-11-20) open source?
Claude Sonnet 4.6 is listed under Proprietary. GPT-4o (2024-11-20) is listed under Unknown. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Claude Sonnet 4.6 or GPT-4o (2024-11-20)?
Claude Sonnet 4.6 has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Claude Sonnet 4.6 or GPT-4o (2024-11-20)?
Claude Sonnet 4.6 has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Claude Sonnet 4.6 and GPT-4o (2024-11-20)?
Claude Sonnet 4.6 is available on OpenRouter, Anthropic, AWS Bedrock, and GCP Vertex AI. GPT-4o (2024-11-20) is available on OpenRouter and OpenAI Batch API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.