April 2026

Claude Opus 4.7 support, a migration to OpenAI's newer Responses API, major macOS performance fixes, a smoother chat scroll experience, configurable log retention, improved Gmail cleanup, and broad stability polish.

• Claude Opus 4.7 support: the newest Anthropic model is now available across the app and is automatically used when your assistant needs its strongest quality-oriented reasoning
• OpenAI provider moved to the Responses API: upgraded the underlying connection to OpenAI models for better streaming, tool calls, and compatibility with newer features
• Major macOS performance improvements: resolved multiple two-second-plus app hangs caused by layout, font, avatar, sound, and menu-bar initialization, plus a new inverted scroll architecture for noticeably smoother chat scrolling
• Configurable LLM log retention: choose how long request logs are kept on your device from Settings > Permissions & Privacy. Options are 1, 7, 30, or 90 days, or never expire
• Faster, more accurate voice transcription: Google Gemini speech-to-text now streams over the Live API for real-time partial transcripts, with support for speaker labels when the provider offers them
• Smarter Gmail cleanup: persistent blocklist and safelist preferences, a new cold-outreach workflow with automatic classification and enrichment, and more reliable archiving behavior
• Conversation archive: archiving and unarchiving conversations now syncs reliably with the server, with archived items sorted by when they were archived
• Assistant thinking in progress cards: the progress card now includes a thinking sub-row and factors thinking time into the total duration, so you can see where the assistant is spending its time
• Polish and stability fixes: cleaner thinking block layout within the chat column, Reflections grouped under Background in the sidebar, wider model names in the Usage breakdown, a fixed Web Search API key field, smoother onboarding, and a wide range of reliability improvements across memory, credentials, and OAuth

Dramatically improved chat performance and stability on macOS, a redesigned onboarding flow, real assistant names throughout the UI, a refreshed integrations panel, and broad UX polish.

• Dramatically improved chat performance and stability on macOS: resolved a wide range of rendering hangs, layout freezes, and scroll issues, including fixes for blank chat on conversation switch, streaming scroll corrections, and smoother message rendering overall
• Redesigned onboarding flow: the setup experience now focuses on what you want your assistant to do and how it should behave, replacing the previous personality quiz with a more practical, goal-oriented approach
• Assistant identity improvements: assistants now display real names instead of IDs throughout the app, with random name generation for new assistants and the ability to edit role and description directly from the Identity panel
• Refreshed integrations panel: the integrations page has been redesigned with a cleaner grid layout and moved into Settings as a dedicated tab, with provider logos for easier recognition
• Smoother scrolling and chat polish: a new scroll model brings smoother conversation scrolling, better alignment throughout the chat, animated conversation names on hover, a new sidebar groups divider, and archived conversations sorted by archive time
• Memory and context improvements: memory recall is now more configurable, consolidation is less aggressive to prevent memory loss, and deleted memories are now recoverable
• Broad stability and UX fixes: simplified permission controls, skill previews now work before installation, Slack gained /new command support, and numerous fixes across modals, attachments, sidebars, and the composer

Introduces a referral program for earning credits, Linear integration, cleaner thinking blocks, configurable knowledge base injection, improved API key management, a polished chat and sidebar experience, and broad stability fixes.

• Referral program: invite friends with your unique referral link and earn credits when they sign up. Accessible from the Billing tab and the sidebar, with stats tracking and program details built in
• Linear integration: connect to Linear through the platform without configuring your own OAuth app, enabled by default during onboarding alongside Outlook
• Thinking blocks rendered as markdown and collapsed by default: the assistant's reasoning is now displayed as clean, formatted text that starts collapsed, making responses easier to read
• Configurable knowledge base injection: control which knowledge base files are automatically included in conversations, with fixes for duplicate and out-of-order content
• Improved API key management: a more reliable system for storing and reading API keys across settings and services
• Chat and sidebar polish: a new animated typing indicator, spell checking in the composer, a Recents group replacing ungrouped conversations, and cleaner sidebar text handling
• Stability and correctness fixes: numerous fixes across scrolling, history loading, dictation, audio handling, and OAuth flows, reducing crashes and stale data issues

Introduces the Personal Knowledge Base for reliable fact recall, a refreshed design system, major macOS chat performance fixes, background agents for parallel task execution, and numerous stability improvements.

• Personal Knowledge Base (PKB) introduced: your assistant now has a persistent memory system that files and retrieves important information across conversations, with a fully redesigned Memory inspector showing what your assistant remembers and how confident it is
• Refreshed design system: updated color palette, new typography, and polished components throughout the app for a cleaner, more modern look
• Major chat performance improvements: resolved several severe slowdowns on macOS, including multi-minute freezes when switching conversations and layout bottlenecks that caused the app to hang
• Background agents for parallel work: your assistant can now spawn background agents to handle tasks independently, with different roles for different types of work like research, coding, or planning, and the ability to report results back when finished
• Stability and rendering fixes: smoother thinking block animations, improved markdown formatting, better sidebar behavior, and more reliable scrolling throughout the app

The biggest release yet: Vellum goes open source, introduces platform-hosted assistants, a completely revamped memory system with image support, Outlook feature parity, conversation folders, and proactive assistant check-ins.

• Open source launch: the Vellum Assistant repository is now publicly available, inviting the community to explore, contribute, and build on the platform
• Platform-hosted assistants: assistants can now run fully hosted on the Vellum platform, removing the need for local infrastructure and enabling seamless cloud-based operation
• Revamped memory system with image support: the memory system has been completely rebuilt with support for image references, smarter search that combines multiple retrieval strategies, and more reliable memory consolidation
• Outlook Calendar and Email reach full feature parity with Google: Outlook Calendar and Outlook Email integrations are now generally available, matching the functionality previously available only for Google Calendar and Gmail
• Conversation folders and sidebar improvements: organize conversations into folders with automatic grouping by source, improved icons and count badges, and easy group management
• Proactive assistant check-ins: your assistant can now periodically review its notes, reflect on recent conversations, and reach out when it has something worth sharing, enabled by default
• Skills system redesign: skills have been rebuilt with better discovery, easier installation, and more reliable behavior across the board
• Performance and stability improvements across macOS and iOS: faster conversation loading, smoother scrolling, and reduced memory usage through better caching and background processing

Major macOS performance and stability improvements, Outlook messaging support, smarter assistant memory, security hardening, and polished UI components.

• Significant macOS performance and stability improvements: fixes for chat scroll freezes, sidebar lag, and app responsiveness issues, resulting in a noticeably smoother experience
• Outlook messaging support: Vellum can now connect to Microsoft Outlook as a messaging provider, joining the existing Slack integration and expanding where your assistant can be reached
• Smarter assistant memory: the assistant now remembers its capabilities and available tools at startup, with improved search for finding relevant memories
• Security hardening: removed the ability to bypass permission prompts, tightened access controls across the app, and added stricter validation for sensitive operations
• Polished UI components: redesigned skill detail page, improved file browser, better dropdowns and navigation, and a context window indicator showing how much conversation space is left

Signing key handling improvements and automatic migration for smoother upgrades.

• Improved signing key handling to prevent potential authentication issues during normal operation
• Automatic key migration when upgrading from older versions, ensuring a smooth upgrade experience without manual steps

Thinking blocks in chat, overhauled memory and retrieval, /compact command, expanded model support, and collapsible sidebar sections.

• Thinking blocks are now visible in chat: see your assistant's reasoning process inline as collapsible blocks, giving you transparency into how responses are formed, enabled by default
• Significantly improved memory and retrieval: smarter memory extraction, better search diversity to surface unexpectedly relevant memories, and improved formatting of recalled information
• New /compact command and context window indicator: manually trigger conversation compaction at any time, with a color-coded bar in the toolbar showing how much context space is remaining
• Expanded model support: DeepSeek, Qwen, Mistral, Meta, Moonshot, and Amazon models added through OpenRouter; Anthropic 1M context window beta and fast mode now supported
• Collapsible sidebar sections and channel conversations: Scheduled and Background sidebar sections can now be collapsed, and channel-bound conversations display with a read-only indicator