Claude Opus 4.6 vs DeepSeek V3
Claude Opus 4.6 (2026) and DeepSeek V3 (2024) are frontier reasoning models from Anthropic and DeepSeek. Claude Opus 4.6 ships a 1M-token context window, while DeepSeek V3 ships a 64k-token context window. On MMLU PRO, Claude Opus 4.6 leads by 13.2 pts. On pricing, DeepSeek V3 costs $0.1/1M input tokens versus $5/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
DeepSeek V3 is ~4900% cheaper at $0.1/1M; pay for Claude Opus 4.6 only for coding workflow support.
Specs
| Released | 2026-02-05 | 2024-12-26 |
| Context window | 1M | 64k |
| Parameters | — | 671B |
| Architecture | decoder only | mixture of experts |
| License | Proprietary | Open Source |
| Knowledge cutoff | 2025-12 | 2024-04 |
Pricing and availability
| Claude Opus 4.6 | DeepSeek V3 | |
|---|---|---|
| Input price | $5/1M tokens | $0.1/1M tokens |
| Output price | $25/1M tokens | $0.3/1M tokens |
| Providers |
Capabilities
| Claude Opus 4.6 | DeepSeek V3 | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | Claude Opus 4.6 | DeepSeek V3 |
|---|---|---|
| MMLU PRO | 89.1 | 75.9 |
Deep dive
On shared benchmark coverage, MMLU PRO has Claude Opus 4.6 at 89.1 and DeepSeek V3 at 75.9, with Claude Opus 4.6 ahead by 13.2 points. The largest visible gap is 13.2 points on MMLU PRO, 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 Opus 4.6, multimodal input: Claude Opus 4.6, reasoning mode: Claude Opus 4.6, and code execution: Claude Opus 4.6. Both models share function calling, tool use, 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 Opus 4.6 lists $5/1M input and $25/1M 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 $10.84 per million blended tokens. Availability is 4 providers versus 12, so concentration risk also matters.
Choose Claude Opus 4.6 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 Opus 4.6 or DeepSeek V3?
Claude Opus 4.6 supports 1M 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 Opus 4.6 or DeepSeek V3?
DeepSeek V3 is cheaper on tracked token pricing. Claude Opus 4.6 costs $5/1M input and $25/1M 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 Opus 4.6 or DeepSeek V3 open source?
Claude Opus 4.6 is listed under Proprietary. 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 Opus 4.6 or DeepSeek V3?
Claude Opus 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 Opus 4.6 or DeepSeek V3?
Claude Opus 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 Opus 4.6 and DeepSeek V3?
Claude Opus 4.6 is available on OpenRouter, Anthropic, AWS Bedrock, and GCP Vertex AI. 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: 2026-04-24. Data sourced from public model cards and provider documentation.