DeepSeek

DeepSeek’s V4 models offer strong reasoning at substantially lower cost than equivalent OpenAI or Anthropic tiers. The wire is OpenAI-compatible (chat completions, streaming, tools), so the integration is straightforward.

Get credentials

Sign in at https://platform.deepseek.com.
Open API keys in the dashboard (direct link: https://platform.deepseek.com/api_keys).
Click Create new API key, copy the value.

Configure in jambonz

In the portal: Account → LLM Services → + Add LLM Service → DeepSeek.

API Key

stringRequired

The key from DeepSeek’s dashboard.

Base URL

string

Defaults to https://api.deepseek.com/v1. Override for self-hosted DeepSeek deployments or proxy endpoints.

Click Test to verify.

Use in an agent verb

session.agent({
  llm: {
    vendor: 'deepseek',
    model: 'deepseek-v4-flash',
    llmOptions: {
      systemPrompt: 'You are a helpful voice assistant.',
    },
  },
  stt: { vendor: 'deepgram', language: 'en-US' },
  tts: { vendor: 'cartesia', voice: 'sonic-english' },
  turnDetection: 'krisp',
  bargeIn: { enable: true },
  actionHook: '/agent-complete',
}).send();

Available Models

See DeepSeek’s models & pricing page for the full list and current pricing. Common picks:

Model	Notes
`deepseek-v4-flash`	Default — fast, cheap, tool-capable
`deepseek-v4-pro`	Higher quality at higher cost

Quirks & errors

deepseek-chat and deepseek-reasoner are deprecated — older V3-era ids that the manifest flags as deprecated: true. They still work in some accounts but are scheduled for removal. Switch to deepseek-v4-flash or deepseek-v4-pro.

Tool-calling reliability is weaker than OpenAI/Anthropic on shorter prompts. If your agent depends on consistent tool invocation, test thoroughly with realistic prompts. For complex tool flows, consider Claude or GPT-4o.

401 — key revoked or copied with whitespace. Regenerate at platform.deepseek.com/api_keys.