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Documentation Index

Fetch the complete documentation index at: https://www.rumus.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

Bring your own DeepSeek API key to use the V3.2 family — including the Reasoner model with extended thinking. Requests go directly from your machine to DeepSeek.

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Before you start

You need:
  • A DeepSeek account at platform.deepseek.com.
  • An API key from the API Keys page on your DeepSeek dashboard.
  • Sufficient credit on your DeepSeek account.

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Add DeepSeek in Rumus

1

Open the model settings

Go to Settings → AI → Models and click Add Model.
2

Pick the provider

Set Provider to DeepSeek.
3

Paste your API key

Paste the key into API Key. It’s stored encrypted in your local vault.
4

(Optional) Custom base URL

Leave Base URL blank to use the default https://api.deepseek.com. Override only for proxies or alternative regional endpoints.
5

Pick a model

Choose from the list, or toggle Enter custom ID to type a model ID manually.
6

Capabilities

Capability flags are pre-set for the built-in models. For a custom model ID, set them to match what DeepSeek’s docs say the model supports.
7

Save

The model appears in the picker under Custom Models.
ModelIDGood for
DeepSeek V3.2deepseek-chatDefault — fast, strong at code, supports tool calling
DeepSeek V3.2 Reasonerdeepseek-reasonerLonger thinking budget for harder reasoning and math
Both models offer a 128K context window. The Reasoner exposes thinking tokens; tool calling is only supported on deepseek-chat. For the latest on the DeepSeek lineup, see the DeepSeek API docs.

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Tips

  • Reasoner vs Chat. Pick the Reasoner only when extra thinking helps — it spends more output tokens. For agentic work that needs tool use, stay on deepseek-chat.
  • Pricing is among the lowest of any major provider. If cost matters, DeepSeek is a strong daily driver.

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Troubleshooting

Recreate the API key in the DeepSeek dashboard. Make sure it hasn’t been revoked.
Toggle Enter custom ID and paste the exact model ID (e.g. deepseek-reasoner).
The Reasoner doesn’t support tool calling — switch to deepseek-chat for agentic tasks.
Hit a snag we didn’t cover? Ask in the Rumus community.

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Next steps

Other providers

Anthropic, OpenAI, Google, Z.AI, Kimi, Ollama, OpenAI-compatible.

Built-in models

Use Rumus’s bundled DeepSeek models without managing a key yourself.