Claude 3.5 Sonnet vs DeepSeek V3
Claude 3.5 Sonnet (2024) and DeepSeek V3 (2024) are frontier reasoning models from Anthropic and DeepSeek. Claude 3.5 Sonnet ships a 200K-token context window, while DeepSeek V3 ships a 64k-token context window. On MMLU PRO, Claude 3.5 Sonnet leads by 1.3 pts. On pricing, DeepSeek V3 costs $0.1/1M input tokens versus $3/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
DeepSeek V3 is ~2900% cheaper at $0.1/1M; pay for Claude 3.5 Sonnet only for coding workflow support.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-06-20 | 2024-12-26 |
| Context window | 200K | 64k |
| Parameters | 70B | 671B |
| Architecture | decoder only | mixture of experts |
| License | Unknown | Open Source |
| Knowledge cutoff | 2024-04 | 2024-04 |
Pricing and availability
| Pricing attribute | Claude 3.5 Sonnet | DeepSeek V3 |
|---|---|---|
| Input price | $3/1M tokens | $0.1/1M tokens |
| Output price | $15/1M tokens | $0.3/1M tokens |
| Providers |
Capabilities
| Capability | Claude 3.5 Sonnet | DeepSeek V3 |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | No | Yes |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
Benchmarks
| Benchmark | Claude 3.5 Sonnet | DeepSeek V3 |
|---|---|---|
| MMLU PRO | 77.2 | 75.9 |
| HumanEval | 92.0 | 85.5 |
| Chatbot Arena | 1340.0 | 1302.0 |
| BigCodeBench | 44.6 | 50.0 |
| Aider Polyglot | 51.6 | 48.4 |
| LiveCodeBench | 48.7 | 49.6 |
| HellaSwag | 96.2 | 95.7 |
| Massive Multitask Language Understanding | 88.7 | 88.5 |
Deep dive
On shared benchmark coverage, MMLU PRO has Claude 3.5 Sonnet at 77.2 and DeepSeek V3 at 75.9, with Claude 3.5 Sonnet ahead by 1.3 points; HumanEval has Claude 3.5 Sonnet at 92 and DeepSeek V3 at 85.5, with Claude 3.5 Sonnet ahead by 6.5 points; Chatbot Arena has Claude 3.5 Sonnet at 1340 and DeepSeek V3 at 1302, with Claude 3.5 Sonnet ahead by 38 points. The largest visible gap is 38 points on Chatbot Arena, 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 3.5 Sonnet, multimodal input: Claude 3.5 Sonnet, reasoning mode: Claude 3.5 Sonnet, tool use: DeepSeek V3, and code execution: Claude 3.5 Sonnet. Both models share function calling and 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 3.5 Sonnet lists $3/1M input and $15/1M output tokens, while DeepSeek V3 lists $0.1/1M input and $0.3/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts DeepSeek V3 lower by about $6.44 per million blended tokens. Availability is 6 providers versus 12, so concentration risk also matters.
Choose Claude 3.5 Sonnet when coding workflow support and larger context windows are central to the workload. Choose DeepSeek V3 when provider fit, lower input-token cost, and broader provider choice 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 3.5 Sonnet or DeepSeek V3?
Claude 3.5 Sonnet supports 200K tokens, while DeepSeek V3 supports 64k 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 3.5 Sonnet or DeepSeek V3?
DeepSeek V3 is cheaper on tracked token pricing. Claude 3.5 Sonnet costs $3/1M input and $15/1M output tokens. DeepSeek V3 costs $0.1/1M input and $0.3/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Claude 3.5 Sonnet or DeepSeek V3 open source?
Claude 3.5 Sonnet is listed under Unknown. DeepSeek V3 is listed under Open Source. 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 3.5 Sonnet or DeepSeek V3?
Claude 3.5 Sonnet 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 3.5 Sonnet or DeepSeek V3?
Claude 3.5 Sonnet 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 3.5 Sonnet and DeepSeek V3?
Claude 3.5 Sonnet is available on GCP Vertex AI, AWS Bedrock, Anthropic, OpenRouter, and Microsoft Foundry. DeepSeek V3 is available on DeepInfra, Fireworks AI, DeepSeek Platform, Microsoft Foundry, and OpenRouter. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.