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Model launches, tool setup and price comparisons. Every post comes with code you can run.

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2026-10-01Comparison

Why a cheap Claude API bills 6,477 tokens for "hi"

Many discounted Claude APIs are resold Claude Code subscriptions. Their built-in system prompt rides along and is billed as your input. How to check yours.

2026-09-30Comparison

LLM API pricing comparison: Claude, GPT, Gemini, DeepSeek

Live API prices for Claude Opus and Sonnet, GPT-6, Gemini Flash and DeepSeek against the official price, with a cost estimate method and ways to spend less.

Compare LLM API pricing comparison claude-opus-5-5gpt-6-sol Lazu

2026-09-30Tool setup

Claude Code with a custom API: ANTHROPIC_BASE_URL setup

Run Claude Code on pay-as-you-go API billing, not a subscription: the settings.json env block, what /model opus, sonnet and haiku map to, and the discount lane.

Guide Claude Code with a custom API claude-sonnet-5-5claude-opus-5-5 Lazu

2026-09-30Tool setup

Codex custom provider setup: config.toml and base_url

Point Codex CLI or the Codex app at a custom provider: model_providers, base_url, env_key and wire_api, why /model shows one model, and the discount lane.

Guide Codex custom provider setup gpt-6-solgpt-5.6-sol Lazu

2026-09-30Tool setup

One API key for GPT, Claude, Gemini and DeepSeek

Point the OpenAI SDK at one base URL and call GPT, Claude, Gemini and DeepSeek with a single key. Native Anthropic and Gemini SDKs work too.