LangChain + GPT-4/GPT-4o Integration Guide

Difficulty: Easy · Typical monthly cost: $50-$500

Step-by-step setup

  1. Install the framework and integration SDK dependencies.
  2. Configure API keys and runtime environment variables.
  3. Create a minimal pipeline with one agent and one retrieval/tool module.
  4. Add observability (LangFuse / Phoenix) before production traffic.
  5. Load test with realistic prompt and context windows.

Code snippet

# Example starter pseudocode
from framework import Agent
from provider import Client

client = Client()
agent = Agent(model="best-available", integration="GPT-4/GPT-4o")
print(agent.run("run a health check"))

Troubleshooting

  • 401 or auth errors: re-check API key scopes and org/project settings.
  • Latency spikes: reduce retrieval depth and enable response caching.
  • Token cost spikes: tune chunk size, top-k, and prompt verbosity.
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