DeepSeek R1 0528 vs Grok-3
DeepSeek R1 0528 (2025) and Grok-3 (2026) are frontier-tier reasoning models from DeepSeek and xAI. DeepSeek R1 0528 ships a 160K-token context window, while Grok-3 ships a 1M-token context window. On Aider Polyglot, DeepSeek R1 0528 leads by 18.1 pts. On pricing, DeepSeek R1 0528 costs $0.1/1M input tokens versus $0.8/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
DeepSeek R1 0528 is ~700% cheaper at $0.1/1M; pay for Grok-3 only for long-context analysis.
Specs
| Released | 2025-01-01 | 2026-01-15 |
| Context window | 160K | 1M |
| Parameters | 671B | 1B |
| Architecture | decoder only | - |
| License | Open Source | Proprietary |
| Knowledge cutoff | - | 2025-04 |
Pricing and availability
| DeepSeek R1 0528 | Grok-3 | |
|---|---|---|
| Input price | $0.1/1M tokens | $0.8/1M tokens |
| Output price | $0.3/1M tokens | $2.4/1M tokens |
| Providers |
Capabilities
| DeepSeek R1 0528 | Grok-3 | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | DeepSeek R1 0528 | Grok-3 |
|---|---|---|
| Aider Polyglot | 71.4 | 53.3 |
Deep dive
On shared benchmark coverage, Aider Polyglot has DeepSeek R1 0528 at 71.4 and Grok-3 at 53.3, with DeepSeek R1 0528 ahead by 18.1 points. The largest visible gap is 18.1 points on Aider Polyglot, 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: Grok-3, multimodal input: Grok-3, function calling: Grok-3, tool use: Grok-3, and code execution: DeepSeek R1 0528. Both models share reasoning mode 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, DeepSeek R1 0528 lists $0.1/1M input and $0.3/1M output tokens, while Grok-3 lists $0.8/1M input and $2.4/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts DeepSeek R1 0528 lower by about $1.12 per million blended tokens. Availability is 5 providers versus 3, so concentration risk also matters.
Choose DeepSeek R1 0528 when coding workflow support, lower input-token cost, and broader provider choice are central to the workload. Choose Grok-3 when long-context analysis and larger context windows 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, DeepSeek R1 0528 or Grok-3?
Grok-3 supports 1M tokens, while DeepSeek R1 0528 supports 160K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, DeepSeek R1 0528 or Grok-3?
DeepSeek R1 0528 is cheaper on tracked token pricing. DeepSeek R1 0528 costs $0.1/1M input and $0.3/1M output tokens. Grok-3 costs $0.8/1M input and $2.4/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is DeepSeek R1 0528 or Grok-3 open source?
DeepSeek R1 0528 is listed under Open Source. Grok-3 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, DeepSeek R1 0528 or Grok-3?
Grok-3 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. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, DeepSeek R1 0528 or Grok-3?
Grok-3 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 DeepSeek R1 0528 and Grok-3?
DeepSeek R1 0528 is available on Together AI, Fireworks AI, GCP Vertex AI, Novita AI, and OpenRouter. Grok-3 is available on OpenRouter, xAI Console, and Chutes AI. 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.