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Example code of cheinisch/openrouter-php-client

Informations about the package openrouter-php-client

OpenRouter PHP Client

A lightweight PHP client for the OpenRouter.ai API.
Supports simple single-line calls as well as advanced features like tool calling, structured outputs, SSE streaming, plugins, provider routing, and reasoning models.

Requirements

Installation

Usage

1) Static convenience method (minimal)

2) With optional attribution headers

3) Client instance – simple chat

The optional 4th parameter $options allows passing any API parameter without breaking existing calls:

4) Extended chat – chatEx()

Returns a full result array with content, usage, finish_reason, tool_calls, reasoning, and id.

5) Tool calling

6) Structured outputs

7) Streaming

8) Reasoning models (Claude 3.7+, o1/o3)

9) Provider routing

10) Generation stats (cost & token counts)

Available options (chat() / chatEx())

Parameter Type Description
max_completion_tokens int Max tokens in the response
temperature float Creativity 0–2, default 1.0
top_p / top_k float / int Sampling parameters
frequency_penalty float Repetition penalty by frequency
presence_penalty float Repetition penalty by presence
stop array Stop sequences
seed int Reproducible output
tools array Tool / function definitions
tool_choice string auto | none | required
parallel_tool_calls bool Call multiple tools in parallel
response_format array json_object or json_schema
plugins array web, file-parser, response-healing, context-compression
provider array Routing: sort, allow, ignore, data_collection
reasoning array ['effort' => 'low\|medium\|high']
modalities array text, audio, image
session_id string Session group for observability

Available models

All versions of openrouter-php-client with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
guzzlehttp/guzzle Version ^7.0
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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