Claude API Research

Data-driven analysis of Claude API rate limits, error patterns, and comparisons with other AI APIs.

API Rate Limit Comparison

Compare rate limits across Claude, GPT-4, Gemini, and other AI APIs. Understand throttling behavior, retry strategies, and tier-based limits.

Claude API Error Guide

Complete reference for Claude API error codes, causes, and fixes. Covers 400, 401, 403, 429, 500, and 529 errors with retry strategies.

Anthropic Model Changelog — Interactive Version Timeline & Capability Comparison

Interactive timeline of every Claude model release with capability comparisons, context windows, pricing, and benchmarks. Track the evolution from Claude 1 to Claude 4 with visual diffs and feature matrices.

Prompt Caching Calculator — Cache Hit Rate & Cost Savings Estimator

Estimate Claude prompt caching savings. Input system prompt length, traffic patterns, and cache TTL to calculate hit rates, compare caching strategies, and project monthly cost reductions.

Anthropic SDK Comparison — Python vs JavaScript vs TypeScript Feature Matrix

Compare Anthropic SDKs across Python, JavaScript, and TypeScript. Feature matrix covering streaming, tool use, retries, types, async support, and code examples for each language with installation guides.