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Use these examples to bootstrap Synth’s fine-tuning workflows. Every recipe lives in the SDK repository under examples/ and comes with helper scripts, configs, and task apps so you can clone, run, and adapt them quickly.
  • Crafter SFT Demo — collect traced rollouts locally, export JSONL datasets, and submit SFT jobs end-to-end.
  • Qwen Coder LoRA — reproduce the 30B A3B adapter run, including compute requirements and key config knobs.
  • Rejection Loop — take RL traces, filter them into curated JSONL, fine-tune, and evaluate the resulting checkpoint.
All commands assume you have run uvx synth-ai setup and have a .env with SYNTH_API_KEY and ENVIRONMENT_API_KEY. When you operate outside the generated demo directories, pass --env-file path/to/.env so the CLI loads the right credentials.
Need RL instead? Visit the RL examples.