en Runtime publication v2
en summary for atomic runtime publication v2.
Read Technical ReportCost & Limits
Technical deep-dives, architectural patterns, and industry updates for the modern AI engineer.
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en summary for atomic runtime publication v2.
Read Technical ReportClaude Code Context Usage: Diagnose Unnecessary Tokens
Measure one repeatable Claude Code task with /context and /cost, isolate token noise, compare A/B metrics, and verify correctness.
Read Technical ReportHow to Connect an OpenAI-Compatible API to Codex
Configure a custom model provider in Codex, set the correct Base URL and Responses API, then run a safe test and troubleshoot common errors.
Read Technical ReportHow to Set ANTHROPIC_BASE_URL and an API Key in Claude Code
Configure ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN in Claude Code, prevent conflicting settings, and verify the connection without exposing your key.
Read Technical ReportCodex Usage Limits: Why You Hit a Limit and How to Continue
Learn how to distinguish a Codex plan limit from an API rate limit, context overflow, or insufficient quota—and choose a safe way to continue working.
Read Technical ReportHow to Migrate an OpenRouter Integration to Another API Gateway
Plan a reversible OpenRouter migration with a requirements matrix, isolated credentials, protocol-specific endpoints, contract tests, a controlled canary, and explicit rollback triggers.
Read Technical ReportAPI Cost Calculator: Tokens, Cache, and Request Count
A formula and copyable Python calculator for input, output, cache write, cache read, request count, hit rate, and three cost scenarios.
Read Technical ReportPrompt Cache: Cost of the First and Repeated Requests
A reproducible Prompt Cache experiment covering the first request, cache hits, a control miss, break-even math, and usage verification.
Read Technical ReportClaude Code Subscription vs API: Which Billing Option Fits?
Compare Claude subscriptions, the Anthropic API, and BetterToken for Claude Code. Choose by workload, billing model, limits, setup, and cost visibility.
Read Technical ReportClaude Code Rate Limits: Subscription, API 429, or 5xx?
Separate Claude Code subscription limits from API 429 and transient 5xx errors, then diagnose the active endpoint without exposing credentials.
Read Technical ReportCan You Use Claude Code for Free? Installation, Subscription, and API
Claude Code is free to install, but working requests need a paid Claude plan, API billing, or a compatible provider. Learn where each billing path begins.
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