Custom API Endpoints for Cursor, Claude Code, Cline & More (2026)

Configure custom API endpoints in Cursor, Claude Code, Cline, Windsurf, and Zed. Switch to any OpenAI-compatible provider, swap models freely, and unify billing.

Function Calling Guide: GPT, Claude & Gemini (2026)

Master tool use across OpenAI GPT, Claude, and Gemini. Covers parallel calls, multi-step agent loops, error handling, and production-ready Python code for 2026 APIs.

Multimodal AI APIs 2026: Vision, TTS & Transcription Guide

Compare GPT-4o, Claude Sonnet 4.6, and Gemini 3 Pro for vision; OpenAI TTS vs ElevenLabs for speech; Whisper vs Deepgram for transcription. Includes Python code and pricing tables.

Best Embedding APIs for RAG in 2026: Models & Guide

Compare OpenAI text-embedding-3-large, Cohere embed-v4, Voyage 3.5, and BGE-M3. Includes benchmarks, Python code, chunking, vector DBs, and cost optimization.

AI API Error Handling: Fix 429, 401 & 500 Errors (2026)

Fix AI API errors fast. Covers 429 rate limits, 401 auth, 500 failures with Python code for exponential backoff, multi-model fallback, and circuit breaker patterns.

Building AI Agents from Scratch in Python (2026)

Build production-ready AI agents in Python without frameworks. Covers function calling, ReAct pattern, memory, multi-tool orchestration, and complete working code using the OpenAI SDK.

Reduce AI API Costs by 60%: 7 Proven Strategies for 2026

Cut AI API spending with prompt caching, model tiering, Batch API, semantic caching, and more. Includes 2026 pricing tables and Python code you can deploy today.