Freesolo Flash
Freesolo Flash is a post-training platform designed for AI agents like Claude Code, Cursor, and Codex to fine-tune small language models (SLMs) on custom data.
PaidVisit site ↗
Our verdict
Who it's for
Fine-tune SLMs on custom data in hours, up to 8x cheaper
Who should look elsewhere
Limited to smaller models (sub-10B parameters) and may not suit all training tasks
Pros
- +Cost-effective: significantly cheaper than metered GPU or token-based pricing
- +Fast turnaround: deployable model in roughly 5 hours
- +No lock-in: own and export weights to serve on any infrastructure
Cons
- −Limited to smaller models (sub-10B parameters) and may not suit all training tasks
- −Requires integration with an AI agent (Claude Code, Cursor, etc.) to operate
Key features
- ✓Natural language description of training runs via agent integration
- ✓Fixed price quote with ETA before any training starts
- ✓Exportable model weights in standard formats
- ✓Encrypted data isolation during training
- ✓Reproducible runs with pinned configs and seeds
- ✓Custom optimized kernels for attention, MLP, normalization, and embeddings
- ✓Support for SFT (supervised fine-tuning) and GRPO (reinforcement learning) training methods
Pricing
No public pricing plans recorded.