OpenRouter (Python)

pip install fallom openai

import os

# Import and initialize Fallom FIRST
import fallom
fallom.init(api_key=os.environ["FALLOM_API_KEY"])

# NOW import OpenAI
from openai import OpenAI

# Create client with OpenRouter base URL
client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key=os.environ["OPENROUTER_API_KEY"]
)

# Set session context (config_key, session_id, customer_id)
fallom.trace.set_session("my-app", "session-123", customer_id="user-456")

# Use any OpenRouter model
response = client.chat.completions.create(
    model="openai/gpt-4o-mini",
    messages=[{"role": "user", "content": "Hello!"}]
)

print(response.choices[0].message.content)

# OpenAI
model="openai/gpt-4o"
model="openai/gpt-4o-mini"

# Anthropic
model="anthropic/claude-sonnet-4-20250514"
model="anthropic/claude-3-opus"

# Google
model="google/gemini-1.5-pro"
model="google/gemini-1.5-flash"

# Meta
model="meta-llama/llama-3.1-70b-instruct"

# And many more...

import fallom
from fallom import models

fallom.init(api_key="your-fallom-api-key")

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="your-openrouter-key"
)

# Get assigned model - could be GPT-4o, Claude, Gemini, etc.
model_id = models.get("my-experiment", "session-123", fallback="openai/gpt-4o-mini")

fallom.trace.set_session("my-experiment", "session-123")

response = client.chat.completions.create(
    model=model_id,
    messages=[{"role": "user", "content": "Hello!"}]
)

import fallom
fallom.init(api_key="your-fallom-api-key")

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="your-openrouter-key"
)

fallom.trace.set_session("my-agent", "session-123")

stream = client.chat.completions.create(
    model="openai/gpt-4o-mini",
    messages=[{"role": "user", "content": "Write a poem."}],
    stream=True
)

for chunk in stream:
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="")