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 Massive Multi-discipline Multimodal Understanding, Claude Sonnet 4.6 leads by 12.9 pts. On pricing, GPT-4o (2024-11-20) costs $2.50/1M input tokens versus $3/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Pick Claude Sonnet 4.6 for general evaluation; GPT-4o (2024-11-20) is better when provider fit matters more.
Decision scorecard
Local evidence first| Signal | Claude Sonnet 4.6 | GPT-4o (2024-11-20) |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Long context |
| Context window | 1m | 128k |
| Cheapest output | $15/1M tokens | $10/1M tokens |
| Provider routes | 6 tracked | 2 tracked |
| Shared benchmarks | Massive Multi-discipline Multimodal Understanding leader | 1 rows |
Decision tradeoffs
- Claude Sonnet 4.6 holds a shared-benchmark lead on Massive Multi-discipline Multimodal Understanding, ahead by 12.9 points.
- Claude Sonnet 4.6 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Claude Sonnet 4.6 has broader tracked provider coverage for fallback and procurement flexibility.
- Claude Sonnet 4.6 uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Claude Sonnet 4.6 for Coding, RAG, and Agents.
- GPT-4o (2024-11-20) has the lower cheapest tracked output price at $10/1M tokens.
- Local decision data tags GPT-4o (2024-11-20) for Coding, RAG, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Claude Sonnet 4.6
$6,150
Cheapest tracked route/tier: OpenRouter
GPT-4o (2024-11-20)
$4,500
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $1,650. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- GPT-4o (2024-11-20) is $5/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Claude Sonnet 4.6 is $5/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Claude Sonnet 4.6 adds Vision, Multimodal, and Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-02-17 | 2024-11-20 |
| Context window | 1m | 128k |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | 2025-12 | 2023-10 |
Pricing and availability
| Pricing attribute | Claude Sonnet 4.6 | GPT-4o (2024-11-20) |
|---|---|---|
| Input price | $3/1M tokens | $2.50/1M tokens |
| Output price | $15/1M tokens | $10/1M tokens |
| Providers |
Capabilities
| Capability | Claude Sonnet 4.6 | GPT-4o (2024-11-20) |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | Yes | No |
| Parallel agents | Yes | No |
Benchmarks
| Benchmark | Claude Sonnet 4.6 | GPT-4o (2024-11-20) |
|---|---|---|
| Massive Multi-discipline Multimodal Understanding | 83.6 | 70.7 |
Deep dive
On shared benchmark coverage, Massive Multi-discipline Multimodal Understanding has Claude Sonnet 4.6 at 83.6 and GPT-4o (2024-11-20) at 70.7, with Claude Sonnet 4.6 ahead by 12.9 points. The largest visible gap is 12.9 points on Massive Multi-discipline Multimodal Understanding, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
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 on the cheapest tracked provider, while GPT-4o (2024-11-20) lists $2.50/1M 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 6 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.
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 $2.50/1M 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 Proprietary. 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, GCP Vertex AI, and Microsoft Foundry. GPT-4o (2024-11-20) is available on OpenRouter and OpenAI API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-25. Data sourced from public model cards and provider documentation.