Google Vertex AI
Managed tuning for supported Google models, with model and method availability documented by Google.
Check current supportFine-Tuning Guide
Cloud Fine-Tuning
Compare a managed model-customization API with a configurable GPU training job. Current model, region, quota, retention, export, and pricing details belong in the buying decision.
OpenAI availability changed
OpenAI announced on May 8, 2026 that it is winding down its fine-tuning platform: it is closed to new users, while existing users have a transition period and fine-tuned models remain available only until their base models are deprecated. Do not design a new project around older OpenAI fine-tuning tutorials.
Read OpenAI's official updateAmazon Bedrock
Managed customization for a region-dependent list of foundation models. Storage, IAM, encryption, and serving choices remain your responsibility.
Check current supportMicrosoft Foundry
Managed and managed-compute tuning paths whose model and region availability must be checked in the current catalog.
Check current supportManaged API or GPU job?
Managed customization API
- • Less infrastructure to operate
- • Limited models, methods, and hyperparameters
- • Check whether weights or adapters can be exported
- • Serving may be tied to provider-specific capacity and lifecycle
Configurable GPU training job
- • More control over model, code, artifacts, and topology
- • You own dependency, checkpoint, retry, and security design
- • Spot capacity can help only if jobs resume safely
- • Idle time, storage, logs, egress, and serving add to compute
Build a current cost estimate
Use a small pilot to measure tokens per second and peak memory. Estimate training, failed attempts, checkpoint storage, evaluation inference, deployment capacity, data transfer, and engineering time. Re-check quotes immediately before committing spend.
Price source and retrieval date are recorded.
Region, accelerator, precision, and reservation assumptions are explicit.
Interruptions and checkpoint frequency are included.
The estimate covers serving the base plus adapter or merged model.