Zivv Blog

Can't sign up for the Claude API or pay with your card? Compare your options, then connect via Zivv using the Anthropic, OpenAI-compatible or Claude Code setup.

Install Claude Code on macOS or Linux, fix npm EACCES and PATH issues, persist gateway variables in zsh, bash or settings.json, and verify routing step by step.

Cut Claude Code token usage with 10 built-in techniques: lean CLAUDE.md, /clear and /compact, Sonnet vs Opus per task, plan mode, subagents and usage checks.

Call Claude, GPT and Gemini from Python with the openai and anthropic SDKs: API keys in .env, multi-turn chat, streaming, timeouts, retries and async calls.

Call Claude, GPT and Gemini from Node.js and TypeScript with one key: openai and @anthropic-ai/sdk setup, streaming, Next.js proxying, timeouts, retries.

Responses API vs Chat Completions: request shape, previous_response_id state, streaming events, tool calls, why Codex uses WebSocket, and Zivv examples.

Prompt caching explained: Anthropic cache_control vs OpenAI auto caching, how cache writes and reads are billed, hit-rate tips, and its role in Claude Code.

A practical guide to AI API streaming with SSE: OpenAI vs Anthropic events, nginx proxy_buffering stalls, dropped streams, fetch readers and billing.

Use LangChain with an OpenAI-compatible gateway: set base_url on ChatOpenAI and ChatAnthropic, stream output, call tools, switch models and fix common errors.

Set up Dify with a custom AI API gateway: configure the OpenAI-API-compatible provider, base URL, key, model names and context size, plus embeddings and fixes.

What an AI API gateway is and how it works: request routing, protocol translation, data security and compliance questions, plus a selection checklist.

Claude Pro/Max subscription or API pay-as-you-go? Compare billing, usage windows, team fit, and how a gateway's Claude MAX group combines both approaches.

Install and configure Claude Code on Windows: npm install steps, PowerShell environment variables for a gateway, WSL notes, and common error fixes.

Fix 402 insufficient balance and quota exhausted errors: tell account balance, key quota, and budget caps apart, top up, and add preflight checks.

Fix 529 overloaded_error, request timeouts, and dropped streams in AI APIs with correct retries, timeout settings, stream recovery, and task splitting.

Set up Cline in VS Code with a custom gateway: OpenAI-compatible and Anthropic provider settings, model IDs, curl checks, and context cost control.

Fix 403 Forbidden and permission_denied errors in AI APIs by checking API key permissions, model group access, region blocks, and organization policies.

Configure Cursor with a custom OpenAI-compatible API: exact base URL format, key setup, model ID matching, curl checks, and fixes for common errors.

Diagnose and fix 429 Too Many Requests in AI APIs: tell RPM, TPM, concurrency, and quota limits apart, and add exponential backoff that actually works.

A step-by-step 401 Unauthorized checklist for AI APIs: key format, Bearer headers, endpoint differences, stale client config, and leaked-key response.

Fix 404 and model_not_found errors in OpenAI-compatible tools: check /v1 base URLs, exact model IDs, key group access, and stale client model entries.

Configure Cherry Studio with Zivv's OpenAI-compatible API: the exact endpoint, key setup, model IDs, connection testing, and 401 and 404 fixes.

How AI API token billing really works: input vs output pricing, prompt cache rates, long-context spend, and monthly budget estimates from real usage.

Why Claude Code hits rate limits faster than chat, how to confirm it, and a step-by-step Zivv setup that keeps long agent sessions stable.

Step-by-step Codex setup on an OpenAI-compatible gateway: base URL and key config, model selection, curl verification, team keys, and fixes.

A low-risk migration playbook for OpenAI SDK projects: audit config, switch baseURL, map model names, verify errors, roll out, validate cost.

Where Gemini long context pays off, where tokens get wasted, and a read-once reuse-often pattern with gateway setup, code, and budget caps.

A practical playbook for team API key management: key structure, budget layers, weekly usage reviews, and an incident process for spend spikes.

A practical multi-model routing guide: classify tasks, set defaults for Claude, GPT, and Gemini, add escalation rules, and control costs.

Official APIs, Zivv, and third-party relays compared across pricing, rate limits, protocols, team features, and support — and how to choose.

Set up Claude Code and Codex with Zivv in about three minutes: environment variables, key creation, verification, and fixes for common errors.

A five-layer playbook for cutting AI API spend: gateway pricing, model routing, prompt optimization, caching and batching, and team budget controls.