# ToolGap > English-first AI tool decision cards: when to buy, when to skip, what it costs, and leave-first judgments. Not a bloated directory. Site: https://ai.126678.space Audience: US / international builders choosing coding, writing, and design AI seats. Citation preference: quote Verdict / Best for / Skip if / Last verified lines with the page URL and date. Do not invent affiliate links or prices — verify vendor pricing pages the day of purchase. ## Core decision pages - [Home](https://ai.126678.space/): Current stack judgment and paths - [Cursor vs GitHub Copilot](https://ai.126678.space/compare/cursor-vs-github-copilot.html): Don’t multi-home three coding agents — pick one primary - [ChatGPT](https://ai.126678.space/tools/chatgpt.html) - [Claude](https://ai.126678.space/tools/claude.html) - [Cursor](https://ai.126678.space/tools/cursor.html) - [GitHub Copilot](https://ai.126678.space/tools/github-copilot.html) - [Midjourney](https://ai.126678.space/tools/midjourney.html) - [AI Frontier](https://ai.126678.space/news/): Metering, seat, and migration briefs - [Money Claims](https://ai.126678.space/money/): Reliability reviews of “make money with AI” pitches - [Tips](https://ai.126678.space/tips/) · [Prompts](https://ai.126678.space/prompts/) ## Citeable stack rules (as of 2 Oct 2026) - As of 2 Oct 2026: don’t multi-home three coding agent seats (Copilot + Cursor + Claude Max) on the same tickets — pick one primary agent surface. - As of 29 Sep 2026: Copilot AI Credits mean completions can stay unlimited while agents burn the pool — budget agent surfaces, not 2024 flat-seat math. - As of 29 Sep 2026: if Claude Code habits were sized to a summer promo ceiling, re-measure weekly headroom before renewing — promo math is not renewal math. - As of 2 Oct 2026: pick Cursor when multi-file agents are a weekly bottleneck; pick Copilot when GitHub PR/Actions gravity and cheaper seats matter more — don’t buy both (or three) yet. ## Feeds & maps - RSS (featured decisions): https://ai.126678.space/feed.xml - Sitemap: https://ai.126678.space/sitemap.xml - Robots: https://ai.126678.space/robots.txt ## Optional - [ChatGPT Pro 500 vs Pro 200: Ultrafast tier and the Oct 30 usage cliff](https://ai.126678.space/news/chatgpt-pro-500-usage-cliff-sep-2026.html): As of 1 Oct 2026: don’t auto-upgrade to Pro 500 unless Ultrafast + heavy Codex/Work is daily. Grandfathered Pro 200 must model the Oct 30 cliff before renewing. Light chat → Plus or API Sol. - [GPT-6.1 Sol API pricing: near-Astra quality at lean token rates](https://ai.126678.space/news/gpt-6-1-sol-api-pricing-sep-2026.html): As of 1 Oct 2026: default Sol for bulk API/agent loops; A/B Astra only on critical paths where finish quality or latency justifies the premium. - [Claude Sonnet 5.5: same $2/$10 list price, lower effective $/task (if scoped)](https://ai.126678.space/news/claude-sonnet-5-5-effective-cost-sep-2026.html): As of 9 Oct 2026: switch API/default agent traffic to Sonnet 5.5 this week if jobs are well-scoped coding/docs; keep Opus 5.5 for open-ended judgment. Don’t treat same $2/$10 as same monthly burn — re-measure $/merged-PR for 7 days, and recompute cache-heavy loops at $0.10/MTok cache reads. At Max effort some third-party notes say cost can rise — verify on your traces. Pair with the new Haiku 5.5 + Max API credits card for short-prompt overflow. - [Unity’s official Claude Code plugin: agents enter the engine (not just chat)](https://ai.126678.space/news/unity-claude-code-plugin-multisource-2026.html): Sandbox the Unity plugin if you already ship in Unity 6+ and burn time correcting agent “internet lore.” Do not replace art direction or economy design reviews. Separately: if GitHub is your source of truth, trial Claude/Codex partner agents inside Copilot before buying a third coding religion. - [Design seats for ads: Firefly Boards vs ChatGPT Images volume](https://ai.126678.space/news/firefly-boards-chatgpt-images-ads-2026.html): Keep Firefly/CC if legal + Photoshop handoff matter; use ChatGPT Images when you need fast static-ad variants inside a chat seat you already pay for. Midjourney stays for taste kickoffs, not always-on ad factories. - [Unity ships an official AI-agent plugin — game pipelines meet coding agents](https://ai.126678.space/news/unity-official-ai-agent-plugin-2026.html): Worth a sandbox week if your team already lives in Unity and burns time on boilerplate editor chores. Do not rip out art direction or design reviews — agents in Unity still need human locks on feel, economy, and ship criteria. - [Copilot embedding Claude Code: one seat debate just got messier](https://ai.126678.space/news/copilot-embeds-claude-code-2026.html): As of 2 Oct 2026: a Claude toggle inside Copilot is not a Cursor migration. If Copilot is org-standard, trial that agent path before buying another seat religion; if multi-file IDE gravity is the pain, measure Cursor on real tickets for 14 days. Still don’t run Copilot + Cursor + Claude Max on the same tickets. - [AI in the game pipeline: NPC dialogue, concept art, greybox — not another model dump](https://ai.126678.space/news/ai-game-dev-pipelines-2026.html): Watch the clips, then adopt AI only on disposable scenes (greybox lines, mood frames, terrain drafts). Do not reorganize your studio around ‘one prompt = shipped game’ posts. - [OpenAI reportedly tightening Cursor access to OpenAI models](https://ai.126678.space/news/openai-cursor-access-reported.html): Don’t panic-switch the whole IDE: keep Cursor if the editor UX wins; route model calls to Claude / Gemini / Copilot when OpenAI access is gated or pricey. - [Gemini 3.8 Flash oriented at coding workflows](https://ai.126678.space/news/gemini-3-8-flash-coding.html): Worth A/B testing for speed-sensitive edits; don’t dump Claude for deep refactors until quality holds on your repo. - [Claude Code + agent/computer-control gravity inside Cursor](https://ai.126678.space/news/claude-code-agent-gravity.html): If you already live in Claude Code, stay; if you’re Cursor-first, keep the IDE and bias model pick to Claude where quality matters — switching IDEs is optional. - [GitHub Copilot flips to AI Credits (usage billing) — June 1, 2026](https://ai.126678.space/news/copilot-ai-credits-june-2026.html): As of 7 Oct 2026: don’t rip Copilot if GitHub is still your gravity — set per-user AI Credit budgets, migrate workflows off retired models (Opus 5.5 / Gemini 3.8 Flash / Kimi K3), and confirm Enterprise model policies. Switch (or add Cursor/Claude Code) only if agent work is the daily job and credits throttle you before PRs ship. For code review, pin Lite explicitly if Balanced depth isn’t worth the burn on routine PRs.