February

February 23, 2026 – v2.2.0-LC0.8.0

New Features & Updates

  • LC Environment Variables for HopGPT – Configured environment variables for improved functionality
  • Maximum Context Window Update – Claude Opus 4.5 context window limited to 50K tokens
  • GPT-5.1 and GPT-5.2 Support – Added compatibility with the latest GPT model iterations
  • Model Retirement – Deprecated GPT-4o/4o mini models
February 5, 2026 – v2.1.0-LC0.8.0

Enhancements

  • Updated GPT-5 Reasoning Effort setting to Minimal to improve average response time. The model will output very few or no reasoning tokens to improve response speed.
  • Upgraded to Next-Gen v1 Azure Open AI API

Bug Fixes

  • Fixed Styling Issues in Light Mode
  • Fixed Link to TOS

January

January 20, 2026 – v2.0.1-LCv0.8.0

Model Updates

  • Deploy o3 DataZone models to HopGPT

Enhancements

  • Scientific Notation Display: Values are now presented in scientific notation for improved readability, especially for larger numbers.
  • Upgrade LiteLLM to v1.80.11-stable

Bug Fixes

  • Accurate LLM Cost Display: The fix resolves inconsistencies in the displayed LLM costs, ensuring users see the correct pricing.
January 14, 2026 – v2.0.1-LCv0.8.0

Model Updates

  • Deploy GPT-5 DataZone Models to HopGPT

Enhancements

  • Upgrade LiteLLM to v1.80.8-stable

December

December 22, 2025 – v2.0.1-LCv0.8.0

Model Updates

  • Released new Anthropic models Sonnet 4.5, Opus 4.5, and Haiku 4.5.
  • Retired Anthropic Opus 4 and Sonnet 4 models.
December 16, 2025 – v2.0.0-LCv0.8.0

New Features 

  • Display the installed LibreChat version in the application footer.
  • Added a banner notification to communicate platform upgrades to HopGPT users.

Bug Fixes

  • Resolved multiple styling issues across the application.

Enhancements

  • Upgraded HopGPT to LibreChat v0.8.0.
  • Updated LibreChat Redis secrets to support v0.8.0.
  • Updated menus to align with LibreChat v0.8.0. Models are now organized by provider.
  • Updated RAG processing so that usernames are no longer sent with requests.

Known Issues

  • Some new LibreChat v0.8.0 components remain disabled while further evaluation and testing are completed.

November

November 18th, 2025 – v1.1.3-LC0.7.8
  • Users can now upload documents up to 12 MB or more, depending on file content, with a hard limit of 50 MB for text files.
  • File Uploads: Implemented a heartbeat mechanism and switched to using Server-Sent Events (SSE) during file uploads to prevent idle timeouts.
  • Conversation Imports: Introduced a file size limit when importing conversations via the Settings > Data Controls feature to prevent system crashes. This limit is configurable and is currently set to 250MB.
  • Updated production to point to the new URL for the website support: hopgpt.it.jh.edu

October

October 16th, 2025 – v1.1.2-LC0.7.8
  • Restored Preset Functionality: Presets are now re-enabled and available in the user interface
  • Branding Updates: Update the login page from Hopkin AI Lab to HopGPT
October 14th, 2025 – v1.1.1-LC0.7.8
  • Domain changes: Update Production Environment Domain Name to chat.ai.jh.edu
  • Removal of multi-chat feature: This feature is not working when LLMs from different providers are selected. Therefore, we have decided to remove it from our platform.
  • Rebranding changes: As part of the name change, we have updated some text and replaced all references from Hopkins AI Lab to HopGPT.

September

September 24, 2025 – v1.1.0-LC0.7.8
  • Upgrade LiteLLM
  • Enable GPT-5 and GPT-5-mini

July

July 29, 2025
  • Configured LibreChat and LiteLLM to handle different configurations for dev and prod. 
  • Enabled Redis-based caching to improve chat performance and reduce response latency.
  • Implemented automated CI/CD pipelines to streamline and standardize application deployments across environments.
  • Bug fix to handled the 100-second Cloudflare timeout by improving error handling for large file uploads when not on VPN.
  • Upgraded RAG to a newer version (v0.5).
  • Applied CPU and memory limits/requests to application pods for more efficient resource management and stability.
  • Enforced consistent file size limits across TXT, LOG, and CSV file type uploads.
  • Updated the Dev DB password for improved security.
July 1, 2025
  • Enabled Claude 4 Sonnet and Opus from Bedrock
  • A new scheduled cron job has been implemented to automatically purge data older than 30 days in LibreChat and ~6 moths in Langfuse, supporting our ongoing data retention and compliance practices.
  • A fix for cached load balancer IP Updates that resolves an issue where outdated IP addresses from the load balancer were being cached.
  • Implemented error handling for large file uploads

June

June 9, 2025
  • VPN requirement dropped; external access now supported.

May

May 29, 2025
  • Update Azure model cost configuration in LiteLLM
  • Fixed bug with requests to root being cached
  • Update Model Welcome Message: Data Retention Policy
May 27, 2025
  • Enabled LLama 4 Maverick, LLama 3.3 Instruct, GPT-4.1 and o3
  • Upgrade LibreChat to v0.7.8
  • Enabled sticky sessions to address LC scaling issue
  • Updated favicon to JH asset
  • Removed Claude 3.5 Sonnet from AI Lab
  • Fixed Gray text / icons on dark background buttons
  • Dynamically Retrieve Mongo CA Certificate at Build Time
  • Fixed Styling Issues

April

April 23, 2025
  • Implementation of Redis
  • UI adjustments
  • Bug fix: None Selected

March

March 31, 2025
  • Update Model intros
  • New Term of Service
  • Updated Help & FAQ
  • New Azure oai instances
  • Scale production
March 20, 2025
  • Upgrade to LibreChat 0.7.7
  • Upgrade LiteLLM to v1.61.20-stable