Built for real engineering decisions

AI Model & API Guides

Source-linked guidance for AI models, API integration, and developer workflows—turning fast-changing prices, quotas, capabilities, and limits into decisions you can verify.

Primary sources first
Reproducible steps and failure boundaries
Volatile facts carry review dates

527 articles
6 languages
12 topics
Updated Oct 23, 2026

Antigravity #3501 has six causes: reset a cached enterprise sign-in, expect it in Gemini Code Assist since June 18, and send a report if every account fails without a VPN

LatestTroubleshooting

Antigravity #3501 "You Do Not Have a Valid License": 6 Causes

Antigravity #3501 on a personal account: reset the cached enterprise sign-in first. If every account fails with no VPN, it's a region or account block.

Oct 23, 202613 min

ChatGPT Chrome extension not working: three kinds of failure, an app-to-Chrome link with a local fix, a region or workspace gate with no local fix, and the October 15 rollout wave with no fix yet

Troubleshooting

ChatGPT Chrome Extension Not Working: Match the Message to a Fix

Most failures sit between the extension and the ChatGPT desktop app, not Chrome. A Web Store "This item is not available" is a region gate with no local fix.

Oct 23, 202631 min

Git is required for local sessions in the Claude desktop app: update Windows builds below 1.49585.0, only Worktree needs Git on 1.49585.0 and later, and the variable must point to bash.exe, not git.exe

Claude Code

Claude Code "Git Is Required for Local Sessions" Error: 4 Causes

Windows builds of the Claude app before 1.49585.0 wanted Git for every local session, so update first. On current builds only Worktree sessions need Git.

Oct 23, 202610 min

Claude Code

How the Claude Code Team Does Code Review: What You Can Copy

AI reviews every Claude Code PR, and humans approve by risk: none, one or two. Local /code-review copies part of it on any plan, but it skips REVIEW.md.

Oct 23, 202621 min

Codex Work mode needs a ChatGPT sign-in: on an API key every send fails, Codex mode sends again, and a ChatGPT sign-in with relay routing keeps Work

Troubleshooting

Codex “Work browser access requires an authenticated account” Fix

Codex desktop blocks every message in Work mode when it has no ChatGPT sign-in. Switch the mode menu back to Codex, or sign in with ChatGPT to keep Work.

Oct 23, 202610 min

How to install Gemini CLI with npm on macOS, Windows and Linux and choose a login that still works

Developer Tools & Agents

How to Install Gemini CLI (2026): Setup and Which Login Works

Install Gemini CLI 0.65.0 with npm and Node.js 20+. Personal Google sign-in stopped working June 18, 2026: use a paid API key, Vertex AI or Antigravity CLI.

Oct 23, 202621 min

July 2026 route board for 16GB VRAM local coding LLMs showing gpt-oss-20b as the safe default, Qwen3.6 low-bit, Gemma 4 E4B, and a stop rule

Developer Tools & Agents

Best Local Coding LLM for 16GB VRAM: gpt-oss, Qwen3.8, Gemma 4

For a 16GB VRAM GPU, start with gpt-oss-20b. Try Qwen3.8-27B only as a 3-bit file with a q8_0 cache, and use Gemma 4 12B when you need long context.

Oct 22, 202625 min

October 1, 2026 entry-price comparison of three agents: ChatGPT dots, Meta Muse, and Grok Bot

Claude & Anthropic

ChatGPT Dots vs Meta Muse vs Grok Bot vs Claude Duet: Entry Costs

Meta Muse starts free, Claude Duet comes with $20 Claude Pro by US waitlist, Grok Bot now starts at $30 for new customers, and ChatGPT dots need $100 Pro.

Oct 22, 202626 min

Decision map for checking the billing provider, payment stage, eligibility, charge status, and one safe next action

ChatGPT & OpenAI

ChatGPT Payment Declined: Payment Was Not Approved, Card Declined

“Payment was not approved.” and “Your card has been declined.” say a ChatGPT payment failed, not why. Check who bills you, the stage, and any charge first.

Oct 22, 202617 min

Claude Code

Claude Code Max Account Banned After Recharge? Appeal and Refund

A ban after paying for Claude Max usually existed before the charge. Appeal at claude.ai/restricted while logged in and request any refund separately.

Oct 22, 202625 min

Claude Code

Claude in Chrome Extension: Install and Connect It to Claude Code

Claude in Chrome, also called Claude for Chrome, connects to Claude Code via claude --chrome, /chrome, or @browser in VS Code. It needs a paid plan and /login.

Oct 22, 202618 min

Claude verification guide showing phone, ID, payment, and enforcement as separate branches

Claude & Anthropic

Claude KYC Verification: Phone, ID, Payment, Age, and Bans

Claude has no single KYC step: every new account verifies a phone, some get a Persona ID-and-selfie check, Yoti handles age checks, and none lifts a ban.

Oct 22, 202618 min

Two Codex Browser disabled messages compared: the in-chat Work settings message fixed by a full quit and new chat, and the Settings → Browser message traced through the log reason

Troubleshooting

Codex Browser Disabled Even When Enabled: 2 Messages, 2 Fixes

Browser on but Codex says it is disabled? Fully quit and reopen the ChatGPT app, continue in a new chat, then check Work preferences → Local browser use.

Oct 22, 202611 min

Gemini 3.1 Pro thinking levels cover with LOW, MEDIUM and HIGH cards and their thinking_level settings

Gemini & Google AI

Gemini 3.1 Pro Thinking Levels: Low vs High, Defaults, Gemini 4

Gemini 3.1 Pro takes thinking_level low, medium, or high and defaults to high; minimal errors. Gemini 4 Argon defaults to medium, the Gemini app to Low.

Oct 22, 202621 min

API Pricing & Plans

Grok Bot X Subscription Pricing: $30 Minimum, Not the $8 Plus

New customers get Grok Bot only on The X Subscription Premium ($30/mo or $300/yr) or higher. Plus and Free exclude it; tax and top-ups cost extra.

Oct 22, 202615 min

Codex-generated route board for setting up DeepSeek on Janitor AI without mixing proxy URL, API key, and model name

API Guides

How to Set Up DeepSeek on Janitor AI: Proxy URL, Model Name, Key

For DeepSeek in Janitor AI, enter https://api.deepseek.com/chat/completions and the model deepseek-flash. deepseek-chat was discontinued on July 24, 2026.

Oct 22, 202616 min

OpenAI API credits expired: a $0 balance with credit_balance_exhausted, a one-year expiry on each top-up with no extension, and a next top-up sized to 12 months of use

API Guides

OpenAI API Credits Expire After One Year: Check Each Purchase

OpenAI API credits expire a year after each purchase and can't be extended. Expired credits return only for billing errors, unauthorized use, or OpenAI faults.

Oct 22, 202615 min

Four Seedance portrait input routes showing raw uploads blocked and trusted, preset, or authorized assets passing separate technical and policy checks

AI Video Generation

Seedance Input Image May Contain a Real Person: Legitimate Fixes

Seedance 2.5 keeps the 2.0 ban on real-face references. Retrying won't help: swap the image, reuse a trusted output, or use a preset or authorized asset ID.

Oct 22, 202621 min

Cover titled Stable & Cheap Gemini Pro Upgrade, showing February 2026 price tags for the student offer, Google AI Plus and Google AI Pro

API Pricing & Plans

Stable & Cheap Gemini Pro Upgrade: Official Google AI Pro Deals

Google AI Pro is $19.99/month in the U.S. and Plus is going Flash-only. Pay less only through Google's student, Pixel, Verizon, family or annual offers.

Oct 22, 202620 min

Google Antigravity plan mode cover: the 2.0 app removed the picker, App v2.17.0 uses /plan, and CLI v1.1.0 uses Shift+Tab

Developer Tools & Agents

Antigravity Plan Mode Missing? It Returned as /plan in App 2.17

Antigravity's 2.0 app dropped the Planning/Fast picker on May 19, 2026. Use /plan in App v2.17.0+ or Shift+Tab in the CLI, and set plans to always need review.

Oct 21, 202612 min

Can Claude generate images? No photos or AI art on any model or plan, diagrams and charts as SVG, HTML or PNG, photos in a chat only via a connector

AI Image Generation

Can Claude Generate Images? No, But Here's What It Can Do (2026)

No. Claude outputs text and code, not pixels, on every model and plan. It draws SVG diagrams and charts itself; photos need a connector or an image API.

Oct 21, 202616 min

Cheapest AI API by token mix: GPT-6 Luna at $0.10 / $0.50, DeepSeek Flash cached input at $0.003 off-peak, and Grok 4.7 at $2 / $6 per 1M tokens

API Pricing & Plans

AI API Price Comparison: Cheapest Model by Input and Output Mix

As of September 26, 2026, GPT-6 Luna and DeepSeek Flash cost least per token. Among $2-input models, Grok 4.7 is cheapest; past 272K tokens, Sonnet 5 beats Sol.

Oct 21, 202618 min

Conceptual Claude API key ownership guide: create and revoke your own key, track billing, and match the endpoint; Max and Team offer claimed monthly API credits, while Pro includes none.

API Guides

Claude API Key: How to Get One, Is It Free, and Safe Buying

Creating a Claude API key is free; calls spend prepaid credits. New users get a small test credit, Max and Team add monthly API credits, and Pro adds none.

Oct 21, 202616 min

Claude cloud session credit ($100 on Pro, $250 on Max, cloud sessions only), usage credits billed at API rates, and a free limit reset that refills one limit

Claude Code

Claude Cloud Session Credit vs Usage Credits vs Limit Reset

Cloud session credit claims closed October 7, 2026; claimed balances still pay for cloud runs. Usage credits bill API rates; Max/Team API credits fund the API.

Oct 21, 202617 min