> ## Documentation Index
> Fetch the complete documentation index at: https://docs.51ultron.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> What's new in Ultron.

## v0.3 — March 2026

**Kimi K2 model upgrade**

* Upgraded the primary execution model to Kimi K2 via Moonshot AI
* Significant improvements to cold email personalization, competitive analysis depth, and content quality
* Model routing updated: Kimi K2 for complex reasoning, fast model for lightweight tasks

**Compression engine v2**

* 3-layer cascade compression: MicroCompact → Session Memory Compact → API Digest
* Sessions now run indefinitely without manual restarts
* CompactBoundary mechanism prevents re-compressing already-compressed content

**Brain Graph**

* Visual semantic memory map launched
* Navigate, audit, and delete memory entries from a connected graph view
* Edge strength reflects semantic similarity between memory nodes

**50+ MCP servers**

* Expanded from 20 to 50+ pre-loaded MCP servers per sandbox session
* Added: Sentry, PostHog, Webflow, Monday, Make, Cloudflare, Atlassian
* Per-user dynamic loading: servers load based on your connected integrations

***

## v0.2 — January 2026

**Canvas system**

* Launched 30+ visual canvas templates across Sales, Research, Content, Ops, and Data categories
* All canvases pre-research with 3 live Brave searches before generation
* PDF and PNG export from every canvas
* Inline rendering — no separate builder or page switch

**Composio integration**

* 250+ integrations available via Composio gateway
* Auto-routed in sandbox sessions based on connected services

**Parallel execution**

* Increased to 75 concurrent task slots (5 agents × 15 workspaces)
* Within-skill parallel tool execution via Promise.all
* Semaphore control: max 2 concurrent skills per session

**Skills expanded to 35+**

* Added: ICP Deep Match, Trigger Events, Pricing Research, Post-Call Blueprint
* All skills now auto-save memory and auto-log activity after completion

***

## v0.1 — November 2025

**Initial release**

* Five specialized agents: Cortex, Specter, Striker, Pulse, Sentinel
* 15 skills across Research, Lead Gen, Sales, Content, and Ops
* Core chat interface with SSE streaming and tool activity feed
* VIRALS scoring for content (0–12 scale)
* Cold email 6-point quality gate
* Memory system with 4 types and Sonnet-powered recall
* Lessons system: errors stored and applied on next run