May 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active in an inference pass.…
Model details →DeepSeek: R1 0528 vs Body Builder (beta)
DeepSeek: R1 0528 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Transform your natural language requests into structured OpenRouter API request objects. Describe what you want to accomplish with AI models, and Body Builder will construct the appropriate API calls. Example: "count to 10 using gemini and …
Model details →Side-by-side comparison
| Capability | DeepSeek: R1 0528 | Body Builder (beta) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 164K | 128K | 🏆 DeepSeek: R1 0528 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.45 | $-1000000.00 | 🏆 Body Builder (beta) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $2.15 | $-1000000.00 | 🏆 Body Builder (beta) |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | — | 🏆 DeepSeek: R1 0528 |
| Vision input Accepts image inputs alongside text. | — | — | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 DeepSeek: R1 0528 |
Frequently asked questions
Is DeepSeek: R1 0528 better than Body Builder (beta)?
DeepSeek: R1 0528 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between DeepSeek: R1 0528 and Body Builder (beta)?
Input: $0.45 vs $-1000000.00 per 1M tokens. Output: $2.15 vs $-1000000.00 per 1M tokens.
What context windows do DeepSeek: R1 0528 and Body Builder (beta) support?
DeepSeek: R1 0528 supports up to 164K tokens. Body Builder (beta) supports up to 128K tokens.
Do both DeepSeek: R1 0528 and Body Builder (beta) support tool calling?
DeepSeek: R1 0528: yes. Body Builder (beta): not advertised.