Requesty

Requesty is a unified, OpenAI-compatible LLM gateway. Access models from multiple providers through a single API key, with caching, failover, and cost optimization.

Setup

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

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

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

Models

Models use a provider/model prefix format:

• openai/gpt-4o-mini
• anthropic/claude-sonnet-4-5
• google/gemini-2.5-flash
• deepseek/deepseek-chat

See app.requesty.ai/router/list for the full catalog.

Tested Models

Unit tested (mock HTTP server): anthropic/claude-sonnet-4

Live tested against https://router.requesty.ai/v1: openai/gpt-4o-mini, google/gemini-2.5-flash

Usage

model := requesty.Chat("openai/gpt-4o-mini")

result, err := goai.GenerateText(ctx, model, goai.WithPrompt("Hello"))
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://router.requesty.ai/v1 endpoint
WithHeaders(h)	map[string]string	Set additional HTTP headers
WithHTTPClient(c)	*http.Client	Set a custom *http.Client

Notes

• Supports image inputs (depends on the underlying model).
• Sends optional HTTP-Referer and X-Title analytics headers, as documented by Requesty.
• Usage reporting is enabled by default (usage: {include: true} in request body).
• Environment variable REQUESTY_BASE_URL can override the default endpoint (for example, the EU endpoint https://router.eu.requesty.ai/v1).