# TopAI Guide

> Independent, source-checked guides to ChatGPT, Claude, Midjourney and AI APIs: plans, pricing, availability, errors and comparisons. Prices and rules are copied from official vendor pages; each guide lists its sources and the date they were checked.

## ChatGPT

- [ChatGPT Guide: Plans, Prices, Sharing Rules and Fixes](https://topai.one/chatgpt/): ChatGPT plans and prices, what the rules say about sharing accounts, availability by country and fixes for common errors.
- [Can You Share a ChatGPT Plus Account? Rules and Risks](https://topai.one/chatgpt/can-you-share-chatgpt-plus-account/): OpenAI's terms say a ChatGPT account is for one person. What the rules say, what goes wrong with shared or resold accounts, and legit ways to pay less. (updated 2026-10-18)
- [ChatGPT Business for Small Teams: Price, Seats, Premium](https://topai.one/chatgpt/chatgpt-business-for-small-teams/): ChatGPT Business gives each teammate a seat, from 2 users. Standard vs Premium seats, monthly vs annual billing, how it compares with Plus, and setup. (updated 2026-10-18)
- [ChatGPT Plans Compared 2026: Free vs Go vs Plus vs Pro](https://topai.one/chatgpt/chatgpt-plans-compared/): Every ChatGPT plan side by side: Free, Go, Plus, three Pro tiers and Business. What each adds, who it fits, and links to official prices. (updated 2026-10-18)
- [ChatGPT Pro 100 vs 200 vs 500: Which Pro Tier Is Worth It?](https://topai.one/chatgpt/chatgpt-pro-tiers/): ChatGPT Pro has three tiers: Pro 100, 200 and 500. What each adds, who keeps the old Pro 200 allowance to Oct 29, 2026, and how Ultrafast uses it up. (updated 2026-10-18)

## Claude

- [Claude Guide: Claude.ai Plans, API Keys and Pricing](https://topai.one/claude/): Claude API pricing per model, how to get an API key, Claude.ai plans and Claude Code, explained with official sources.
- [Claude API Pricing 2026: Model Tiers and How to Save](https://topai.one/claude/claude-api-pricing/): How Claude API tiers compare: Fable, Opus 5.5, Sonnet and Haiku 5.5, plus batch, caching and long-context rules, linked to Anthropic's official prices. (updated 2026-10-18)
- [Claude Pro vs Max vs API: Limits, Tiers and Which to Pick](https://topai.one/claude/claude-pro-vs-max-vs-api/): Pro is the entry paid plan, Max sits above it with 5x or 20x usage and API credits, and the API is pay per token. How the limits work and which to pick. (updated 2026-10-18)
- [How to Get a Claude API Key (2026): Step by Step](https://topai.one/claude/how-to-get-claude-api-key/): Get an official Claude API key in five minutes: create a Claude Console account, add credits, create a key at platform.claude.com/settings/keys, test it. (updated 2026-10-18)

## Image & Video

- [Midjourney, Image & Video AI Guide](https://topai.one/image-video/): Midjourney plans and API status, image and video generation tools, Suno music AI and their official alternatives.
- [AI Video Tools: Pick the Right Generator for the Job](https://topai.one/image-video/ai-video/): Start here for AI video: text-to-video, image-to-video, avatars, editing, ads, APIs and coding agents. Which tool fits which job, and what changed in 2026. (updated 2026-10-18)
- [AI Video Generation APIs Compared: Veo, Runway, Kling](https://topai.one/image-video/ai-video-api/): Which official AI video APIs exist after Sora: Gemini API (Veo 3.1, Omni Flash), Runway, Kling and Luma. Models, auth, billing units and terms. (updated 2026-10-18)
- [Can You Use AI Videos Commercially? Rights by Tool](https://topai.one/image-video/ai-video-commercial-use/): What Google (Veo, Flow), Runway, Kling, Luma and Pika terms say about owning and commercially using AI video, free vs paid plans, and the copyright catch. (updated 2026-10-18)
- [Open-Source AI Video Skills for Claude Code and Codex](https://topai.one/image-video/ai-video-skills-claude-code/): Open-source video frameworks and agent skills for Claude Code and Codex, grouped by use, with GitHub links, stars, last update and license as of Oct 18. (updated 2026-10-18)
- [Claude Code + Remotion: Make Your First Video](https://topai.one/image-video/claude-code-remotion/): Set up Remotion's official Agent Skills, prompt Claude Code or Codex to build a video in React, preview it in Remotion Studio and render an MP4. (updated 2026-10-18)
- [First and Last Frame AI Video: How Keyframes Work](https://topai.one/image-video/first-last-frame-ai-video/): How first and last frame AI video works, which tools support it (Veo 3.1, Omni Flash, Kling, Runway API, Luma Ray3.2) and how to prompt the transition. (updated 2026-10-18)
- [Free AI Video Generators: What Free Plans Really Include](https://topai.one/image-video/free-ai-video-generators/): What you actually get free from Google Flow, Runway, Kling, Luma and Pika: credits, models, watermarks and commercial rights, with official plan pages. (updated 2026-10-18)
- [HeyGen vs Synthesia vs D-ID: Which Avatar Tool Fits](https://topai.one/image-video/heygen-vs-synthesia/): HeyGen, Synthesia and D-ID compared on avatars, video length, dubbing, API and plan tiers, with links to each official pricing page, and which to pick. (updated 2026-10-18)
- [How to Use Google Veo 3.1 in Gemini and Flow](https://topai.one/image-video/how-to-use-veo-3-1/): Step by step: where Veo 3.1 lives in October 2026, which Google AI plan you need, how to make clips in Flow, credits per clip, and the Gemini API route. (updated 2026-10-18)
- [How to Turn a Photo into a Video with AI](https://topai.one/image-video/image-to-video-ai/): How image-to-video AI works, which official tools do it (Veo 3.1, Kling 4.0, Runway, Luma Ray3.2), how first and last frames help, and motion prompts. (updated 2026-10-18)
- [Is There a Midjourney API? 2026 Status and Alternatives](https://topai.one/image-video/midjourney-api/): Midjourney still has no public API, only a limited MCP test. The official record, what its Terms say on automation, how plans differ, official image APIs. (updated 2026-10-18)
- [Sora API Shutdown: Migrate to Another Video API](https://topai.one/image-video/sora-api-shutdown/): OpenAI removed the Videos API and all sora-2 models on September 24, 2026 with no replacement. How to map your calls to Veo, Runway, Kling or Luma APIs. (updated 2026-10-18)
- [Is Sora Shut Down? What Happened and What to Use Now](https://topai.one/image-video/sora-shut-down/): Yes. OpenAI shut the Sora app on April 26, 2026 and the Sora API on September 24, 2026. How to export your videos, refunds, and what to use instead. (updated 2026-10-18)
- [Is There an Official Suno API? 2026 Status and Options](https://topai.one/image-video/suno-api/): Suno still has no public, self-serve API; a partner program began in July 2026. What that means, how Suno plans and credits differ, unofficial API risks. (updated 2026-10-18)
- [Veo 3.1 vs Kling vs Runway: Which Video Model to Pick](https://topai.one/image-video/veo-vs-kling-vs-runway/): Veo 3.1, Kling 4.0 and Runway Gen-4.5 compared on clip length, frames, references, audio, API access and commercial terms, from official docs. (updated 2026-10-18)

## APIs

- [AI APIs for Developers: Pricing, Keys and Errors](https://topai.one/api/): Compare AI API prices across OpenAI, Anthropic, DeepSeek and others, use one key for many models, and fix common API errors.
- [DeepSeek API Pricing 2026: Flash vs V4 Pro, Off-Peak Hours](https://topai.one/api/deepseek-api-pricing/): How DeepSeek's API tiers compare: deepseek-flash vs deepseek-v4-pro, peak vs off-peak hours in UTC, cache hits vs misses, and where to find official rates. (updated 2026-10-18)
- [Fix AI API Errors: 401, 429, 529 and insufficient_quota](https://topai.one/api/fix-ai-api-errors/): What each OpenAI and Anthropic API error code means, which ones retries can fix, and a copy-paste retry pattern that respects Retry-After. (updated 2026-10-18)
- [OpenAI API Pricing 2026: GPT-6 Model Tiers Explained](https://topai.one/api/openai-api-pricing/): How OpenAI's API tiers compare: GPT-6 Astra, GPT-6.1 Sol and Luna, Batch, Flex, Fast, Ultrafast and usage tiers, with links to the official price list. (updated 2026-10-18)

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