These tools competes with

UnslothvsTinker

2× faster, 70% less memory LoRA fine-tuning versus Managed distributed fine-tuning API from Thinking Machines Lab

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Choose Unsloth when…

  • You want the fastest OSS LoRA fine-tuning with minimal GPU memory
  • You're fine-tuning Llama, Mistral, or Gemma models
  • Memory constraints are the bottleneck in your training setup

Choose Tinker when…

  • You want a managed fine-tuning API instead of running training infra yourself
  • You need to fine-tune large open-weight MoE models without provisioning GPU clusters
  • You're comparing a hosted training loop against library-based options like Axolotl/Unsloth

Side-by-side comparison

Field
Unsloth
Tinker
Category
Fine-tuning
Fine-tuning
Type
Open Source
Commercial
Free Tier
✓ Yes
✗ No
Pricing Plans
Pro: $29/mo
Usage-based: Per-token, varies by model
GitHub Stars
32,000
Health
95 Active

Unsloth

Dramatically speeds up LoRA and QLoRA fine-tuning by rewriting GPU kernels. Compatible with HuggingFace and works with Llama, Mistral, Gemma, and more. No accuracy loss.

Tinker

Hosted fine-tuning API (LoRA and full fine-tune) for open-weight models, including large MoE models, from Mira Murati's Thinking Machines Lab. A managed-training-loop alternative to library-based tools like Axolotl or Unsloth — usage-based per-token pricing that varies by model.

Shared Connections1 tool both integrate with

Only Unsloth (5)

AxolotlLlamaFactoryTorchtunevLLMTinker

Only Tinker (1)

Unsloth

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