Changelog
Follow new updates and improvements to Happycapy.
New
Added the Grok 4.6 model with a dedicated detail page
Added Featured Skill detail pages with one-click prompt trials, direct runs of associated skills, and link sharing or copying
Improvements
Adjusted image and video generation to be a paid plan capability
Improved new user onboarding to create a project on the first prompt submission instead of auto-creating a blank project
Removed the introductory discount prompt that no longer applies to Sonnet 5
Bug Fixes
New
Added a Seedance 2.5 model page to preselect the video model, start generating, and browse community examples
Added 6 Content Creator interactive project examples to Use Cases
Added a Happycapy watermark to images and videos generated by Free users
Added official third-party connector support for Notion, Slack, Github, Calendar, OneDrive, and more
Bug Fixes
Fixed already-open previews showing stale content after an image or video is updated
Fixed playback failures and out-of-memory errors when previewing large files and videos as full-file loads
Fixed new sessions without a specified model still defaulting to Sonnet 4.6, now unified to Sonnet 5
Fixed the skill detail page still showing a duplicate signup prompt for logged-in users
New
Improvements
Adjusted the model list to pin Kimi K3 at the top and retire M3, K2.7, and DeepSeek V4 Flash
Improved post-release handling to auto-refresh stale pages to the new version instead of showing an error page
Bug Fixes
Fixed occasional send failures for the first message after a sandbox cold start
Fixed team members' sandbox resources not syncing (or wrongly adjusting personal sandboxes) after a team plan change
Fixed sandbox disk capacity being rolled back on restart after a plan change adjusted it
Earlier updates
- Landing Page Redesign & Sandbox V2New Added a redesigned public landing experience with a new homepage, About page, and Automations marketing page Added the Codex GPT-5.6 series models (Luna, Terra, Sol) Added a Skill Arena skill comparison marketing page with multiple categories and demos Improvements Increased add-on top-up value to 1000 credits for $10 (up from 750), with a banner notification Upgraded sandbox architecture to V2 with a dedicated SandboxDO for restart-to-apply, automatic image updates, and more accurate busy/idle detection Bug Fixes Fixed chunked upload failures (503) for global files in remote environments Fixed snapshot and share page file previews to use a public endpoint Fixed Team Pro members (with a personal Free plan) being wrongly blocked by the automations paywall
- Kimi K3 SupportNew Added support for the Kimi K3 model Improvements Retired the Kimi K2.6 and MiniMax M2.7 models
- Seedream 5.0 Pro & Marketing Page LocalizationNew Added the Seedream 5.0 Pro image generation model Added a Grok 4.5 model page Added i18n localization for blog and tools pages across es, ko, ja, and more
- Grok 4.5 Support & Cross-Session CachingNew Added support for the Grok 4.5 model Improvements Improved the create slides UI Improved multi-language localization for the /blog and /tools marketing pages Improved system-prompt caching to be shared across sessions Reduced non-essential background traffic for non-Claude models Limited free users to 1 concurrent video generation Bug Fixes Fixed a bug where team renewal combined with a seat reduction incorrectly deducted credits into negative
- Fable 5 Relaunch & New Media ModelsNew Relaunched the Fable 5 model Added Google Omni Flash video generation model Added Google Nano Banana 2 Lite image generation model
- Sonnet 5 Support & Sandbox OptimizationNew Added support for the new Sonnet 5 model with an upgrade toast Improvements Reduced sandbox startup time when an image update is required Improved the range of models supported by the generate image skill Optimized sandbox build cache by saving it to the fly.io registry, reducing image size per update Bug Fixes Fixed empty model field in sub-session chat events Fixed team usage to hide deleted members and correct the All Members view Fixed a bug where unsupported models were directed to the paid upgrade flow
- Free User Reward Toast & Localized Session TitlesNew Added a $5 discount toast shown after free users complete their first task Improvements Added a Mac Mini AI Server 2026 blog article Added the Humanizer Article Writer tool page Updated the discount checkout loading page to use the CapyLoader animation Improved session title generation to match the language the user asks questions in