Changelog

Changelog

New features, improvements, and fixes from the BuiltChat team.

BuiltChat Sites

Build websites from chat, publish them to a public link, and manage them in My Sites.

New Features

  • BuiltChat Sites: Ask BuiltChat to build a website, such as a portfolio, a menu, or a page for your business, and publish it to a public builtchat.page link. Available on paid plans.
  • Manage your sites in Settings → My Sites: rename, delete, search, and jump back to the chat or project each site came from.
  • Websites can use generated images sized to fit their layout.

Usage Breakdown, Instant Reset and Project Overview

See where your usage goes, top up when you run low, and get a quick overview of each project.

New Features

  • Instant reset: When you have less than 20% of your weekly usage left, paid plans can top up instantly. Unused top-up credit carries over to the next week.
  • Added an Overview tab to projects, showing recent activity and counts at a glance.

Improvements

  • The usage page now breaks down usage by feature and model, supports custom date ranges, and shows clearer charts that work on touch screens.
  • Choosing a model that uses a lot of your allowance now shows a tip with lighter models you can switch to in one tap.
  • Voice typing has simpler stop and cancel controls, and read-aloud audio can now be downloaded.
  • Added a touch setting to hold a sidebar row to open its menu.

GPT-6.1 Terra

Updated Text Models

  • Added GPT-6.1 Terra.
  • Claude Haiku 5.5 is now the default model on the free plan.

Faster Image Uploads

Improvements

  • Chat images upload faster, and AVIF images are now supported.
  • GPT-6 models now run under zero data retention. See Data Security for details.

Bug Fixes

  • Fixed deleted project chats reappearing after navigating away.

Kimi K3.1 Pro

Updated Text Models

  • Added Kimi K3.1 Pro.

Bug Fixes

  • Fixed the image prompt being cleared when a generation was rejected.

Sandbox Languages and Diagrams

Improvements

  • Sandbox now supports Python, JavaScript, and TypeScript.
  • BuiltChat can now create Mermaid diagrams, with improved diagram rendering.

New Image Models and DeepSeek Update

Added FLUX 3 and Recraft image models, updated DeepSeek Flash, and refreshed the What's New walkthrough.

Updated Text Models

  • Updated DeepSeek Flash to V4.1.

New Image Models

  • Added FLUX 3 for image generation and editing at up to 2K resolution, and FLUX 3 Klein at up to 4K.
  • Both FLUX 3 models support ten aspect ratios, from portraits to cinematic views. Choose the size and resolution in Advanced Options, and use a mask to guide edits to a selected area.
  • Added Recraft V4.1 Flash, a fast, low-cost option for image generation.
  • Simplified the image picker to eight active models. Retired GPT Image 1.5, GPT Image 2, Nano Banana 2, FLUX 2 Pro, and FLUX 2 Klein 9B. Existing images and their model labels remain available.

Improvements

  • Improved image downloads.
  • Fixed missing FLUX provider logos in image previews.
  • Refreshed the What's New walkthrough with the latest updates.

Excel Skills and Shared Chat Files

More help with spreadsheets and improved file access in shared chats.

New Features

  • Added Excel skills to help BuiltChat create and work with spreadsheets in Sandbox.

Improvements

  • Improved access controls for file links in shared chats.

Gemini 4 Argon

Updated Text Models

  • Added Gemini 4 Argon, Google's latest model.

Mobile Image Viewing

Bug Fixes

  • Fixed image views overlapping the title bar on mobile.

Nano Banana 2.1

New Image Models

  • Added Nano Banana 2.1 for image generation and editing, with 1K, 2K, and 4K resolution options.

Image Markup and Chat Improvements

Improvements

  • Improved image markup, with drawing tools, undo, zoom, and pan before sending an image.
  • Improved chat session recovery and message saving.
  • Improved multiple-choice questions and retry options for rejected requests.

Claude Haiku 5.5

Updated Text Models

  • Added Claude Haiku 5.5.

Chat Recovery and Image Board Loading

Improvements

  • Cloud chats can reconnect to interrupted responses and recover saved progress.
  • Improved loading on large image boards by limiting how many image previews load at once.

Background Workflows and Presentations

Hand off longer tasks and create presentations with generated visuals.

New Features

  • Workflows let BuiltChat work through longer tasks in the background. Follow their progress and download the results when they're ready.
  • Added PowerPoint creation skills and support for generated visuals in presentation workflows.
  • BuiltChat can find and load relevant tools and skills as needed during a chat.
  • Workflows are available on paid plans.

GPT-6.1 Sol

Updated Text Models

  • Added GPT-6.1 Sol and made it the default paid chat model.

Claude Sonnet 5.5

Updated Text Models

  • Added Claude Sonnet 5.5.

Work with Files in Sandbox

Run code, analyse data, and create downloadable files from your chat.

New Features

  • Sandbox lets BuiltChat work with files and run code to analyse data or create results you can download.
  • Files and working progress can be reused across Sandbox steps within a chat.
  • Sandbox is available on paid plans.

Image Upscaling Improvements

Improvements

  • Removed the pixel limit from local image upscaling.
  • Improved upload error messages and the mobile upscaling panel.

New Models, Feature Walkthrough, and CORENET-X Update

Added new models, a feature walkthrough, printable usage reports, and updated CORENET-X search.

New Models

  • Added GPT-6 Luna, GPT-6 Sol, and GPT-6 Astra.
  • Updated Claude Opus to 5.5 and Grok to 4.7.

New Features

  • Added a feature walkthrough to introduce BuiltChat's capabilities.
  • Added a printable 30-day usage report with account and license details.

Enhancements

  • Updated CORENET-X search to the latest Code of Practice, 4th edition (September 2026), with an updated document link.

Updated Models

New Models

  • Added GPT Image 2.5 Flare and GPT Image 2.5 Sunburst.

Workplace Safety & Health Guidance

Added a Workplace Safety & Health tool for Plus and Pro users.

New Features

  • Added Workplace Safety & Health tool for Plus and Pro users. Search WSHC guidance on potential hazards, precautions, and case studies, with source citations and relevant images.

Updated Models

Updated Gemini Flash and Claude Fable.

Enhancements

  • Updated Gemini Flash to 3.8 and Claude Fable to 5.1.

Source Research and Model Selection Improvements

Added research across sources and improved model selection.

New Features

  • Added research across sources. Chat can investigate complex questions across attached sources, gather supporting evidence, and identify conflicting or missing information.

Enhancements

  • Model popularity now uses weekly usage counts. Fixed missing benchmark data and relative intelligence scores in model selection.

Bug Fixed and Enhancements

Bug Fixes

  • Fixed duplicate prompt submission when double tapping the send button on mobile.
  • Fixed network error message when stream is interrupted when PWA is suspended. On restore, attempt to resume generation response.

Enhancements

  • Added High Input Token warning when prompt length exceed specified threshold.

General

  • Signing up with disposable email is now blocked.

August 31 Major Update

BuiltChat has been rebuilt with agentic chat, reusable sources, collaborative projects, and improved image generation workspace.

Chat

Agent

  • Chat now works as a multi-step agent that can plan, use tools, inspect results, and continue working
  • Added tool approval and user input requests
  • Added stop generation and response steering
  • Added persistent memory and semantic memory
  • Added automatic context compaction for long conversations
  • Web search can now bypass some website with captcha
  • Added in-chat image generation
  • Mermaid diagram can now be rendered in chat.
  • Added CORENET-X search tool

Chat Features

  • Model selection now displays more information
  • Added response regeneration with multiple response versions
  • Added speech to text for chat input
  • Added text-to-speech (dictation) on responses.
  • Added support for mention with @
  • Added support for commands with /
  • Now drag-and-drops support files in addition to images
  • Added minimap for long chats on desktop
  • Favourite are removed in favor for Pinned Chats
  • Pin up to 20 chats to the top of sidebar for quick access

Files, Sources and Facets

  • Added a workspace for chat to manage sources (files) and facets.
  • Added support for PDF, DOCX, PPTX, spreadsheet, CSV, email, text, and web sources
  • Able to reliably process large excel / csv files with thousands of rows and columns.
  • Added native text extraction for compatible files.
  • Added option to switch between auto, text or OCR extraction for files.
  • Added Facets for creating structured content alongside a chat (Notes, Summaries, Quizzes, and FAQs)

Projects

  • Projects are collaborative workspace.
  • Mange members and permissions for projects.
  • Project sources are now available to all project members
  • Project chats are now private until shared

Skills

  • Remove snippet in favour of skills, existing snippet will not be migrated to skills.
  • Added support for skills. Unlike skills in coding agents such as Codex, BuiltChat skills are instruction-only. They guide the AI through repeatable tasks, such as writing emails in your preferred style, but cannot run code or interact with a computer or server.

Images

Workspace

  • Image thread is now call image board
  • Added image albums
  • Images in board and albums can be arranged by drag-and-drop
  • Sharing now supports individual images, albums, and boards

Generation

  • Added more configuration options (size, quality, resolution, background, format and style)
  • Added preconfigured styles
  • Added custom styles
  • Multiple image output are available on supported model

Customization

Appearance

  • Added additional themes
  • Added many options to tweak the interface

Personalization

  • Custom instructions can be set up using guided or freeform setup
  • Added memory - persistent and semantic

    Memory works best when it is small and useful. Avoid saving too many personal details, as this can make responses feel overly personalized.


General

Security and Privacy

  • Everything is private by default. All of your content, including generated outputs are store

    Previously input and output images are publicly accessible though the link to the resources are impossible to guess. Chats and files are always private since the beginning.

Usage

  • Replaced separate monthly chat and image allowances with one weekly usage budget
  • Weekly usage now resets every Monday at 2 PM Singapore time
  • Usages are based on AI usage throughout the app.
  • Usage cost for different models can be viewed in the model selection menu.
  • Added usage breakdowns and charts in Settings

Pricing

  • There are 2 paid plans. Plus and Pro, $35 and $50 per month respectively.
  • Existing users will pay the same price as before.
    • Lite plan users will be upgraded to Plus plan
    • Old Pro plan users will be upgraded to New Pro plan

Issues & Fixes

  • Approximately 15% of chat input images from the previous version cannot be restored due to cleanup bug, affected images now appear as [unavailable image]