DeepSeek

DeepSeek provider using the OpenAI-compatible Chat Completions API.

Setup

go get github.com/zendev-sh/goai@latest

import "github.com/zendev-sh/goai/provider/deepseek"

Set the DEEPSEEK_API_KEY environment variable, or pass WithAPIKey() directly.

Models

• deepseek-chat (DeepSeek-V3)
• deepseek-reasoner (DeepSeek-R1)

Tested Models

Unit tested (mock HTTP server, 2026-03-15): deepseek-chat

Usage

model := deepseek.Chat("deepseek-chat")

result, err := goai.GenerateText(ctx, model, goai.WithPrompt("Explain attention mechanisms"))
if err != nil {
    log.Fatal(err)
}
fmt.Println(result.Text)

Options

Option	Type	Description
WithAPIKey(key)	string	Set a static API key
WithTokenSource(ts)	provider.TokenSource	Set a dynamic token source
WithBaseURL(url)	string	Override the default https://api.deepseek.com endpoint
WithHeaders(h)	map[string]string	Set additional HTTP headers
WithHTTPClient(c)	*http.Client	Set a custom *http.Client

Notes

• Supports reasoning capability (DeepSeek-R1 family).
• Environment variable DEEPSEEK_BASE_URL can override the default endpoint.