YCX25· AI· DevtoolsRunRL
Reinforcement learning as a service
Founders
- Andrew GritsevskiyFounder
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
Unsloth AIS24Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.Shared: reinforcement, learning, modelActive
SynthF24Prompt and Context Optimization for Coding AgentsShared: prompt, model, taskActive
- MythiaW21Rewards card for gamersShared: rewardInactive
ZageS21Pay by bank and earn rewardsShared: rewardInactive
MakeasiteS22Create sites with just a promptShared: promptActive
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About RunRL
RunRL improves LLMs and AI agents with reinforcement learning. Do you have a model that needs to get better at a certain task? Are you tired of messing around with prompts? Do you spend a lot of money on observability, and wish that all this data could let your model self-improve? Well, head on over to RunRL.com, and see what we have to offer! If you give us a model, a prompt, and a reward, we’ll make your model’s reward go up.
San Francisco, CA, USA
RunRL: questions
Which YC batch was RunRL in?
RunRL was in Y Combinator's Spring 2025 batch (X25).
Is RunRL still active?
Y Combinator lists RunRL as active.
Who founded RunRL?
RunRL's founders, as listed on its YC page: Andrew Gritsevskiy (Founder).
Where is RunRL based?
RunRL lists San Francisco, CA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.