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Preference Model vs OpenGrant

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Preference Model compared with OpenGrant
DetailPreference Model logo Preference ModelOpenGrant logo OpenGrant
What it doesOpen-sourcing Karotte, a framework for building robust reinforcement learning environments Search UK grant schemes and funders from Node.js or the terminal
StageNot given Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelOpen source Open source
PricingNot given Not given
Key features
  • Sandboxed execution with non-privileged user isolation
  • Process termination before grading
  • Suspicious file detection and rejection
  • Out-of-memory and fork-bomb prevention
  • Hardened through one million evaluation runs
  • Red-team tested for reward hacking vulnerabilities
  • Scalable environment execution
  • Robust benchmark building support
  • Search grants with filters for region, organisation, theme and deadline
  • Count matching grant schemes and get link to website search
  • Retrieve public facts for individual grant schemes
  • Look up funder profiles by charity number, slug or name
  • No API key required
  • No runtime dependencies
  • MIT licensed open source
  • Rate limit of 60 requests per 60 seconds per client
  • Command-line tool with --json output option
  • Access to OpenGrant MCP server tools
What makes it different
  • Provides secure defaults and primitives specifically designed to prevent reward hacking in RL training
  • Hardened through real-world testing at scale with over one million evaluation runs
  • Designed for training environments where defenses must withstand continuous optimization attempts
  • Addresses AI alignment at the highest leverage point through better environment construction
  • Built and tested internally by frontier AI research team
  • No API key needed to use the SDK
  • Search UK grant schemes and funders from code or terminal
  • MIT licensed and open source
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)29 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)110
Citation Flow (Majestic)2415
Referring domains (Majestic)985

4 details filled in for both companies.

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