Implementation:Mistralai Client python FineTuningJobs Start Cancel

Knowledge Sources	Mistral Client Python Mistral Fine-tuning
Domains	Fine_Tuning, Job_Management
Last Updated	2026-02-15 14:00 GMT

Overview

Concrete tool for starting queued and cancelling active fine-tuning jobs provided by the FineTuningJobs resource.

Description

FineTuningJobs.start() transitions a queued fine-tuning job to the running state. FineTuningJobs.cancel() requests cancellation of an active job. Both methods accept a job_id and return the updated job status.

Usage

Call client.fine_tuning.jobs.start(job_id=...) to begin training, or client.fine_tuning.jobs.cancel(job_id=...) to abort.

Code Reference

Source Location

Repository: client-python
File: src/mistralai/client/fine_tuning_jobs.py
Lines: L897-981 (start sync), L983-1067 (start async), L725-809 (cancel sync), L811-895 (cancel async)

Signature

class FineTuningJobs:
    def start(self, *, job_id: str) -> JobsAPIRoutesFineTuningStartFineTuningJobResponse: ...
    async def start_async(self, *, job_id: str) -> JobsAPIRoutesFineTuningStartFineTuningJobResponse: ...
    def cancel(self, *, job_id: str) -> JobsAPIRoutesFineTuningCancelFineTuningJobResponse: ...
    async def cancel_async(self, *, job_id: str) -> JobsAPIRoutesFineTuningCancelFineTuningJobResponse: ...

Import

from mistralai import Mistral
# Access via: client.fine_tuning.jobs.start(...) or client.fine_tuning.jobs.cancel(...)

I/O Contract

Inputs

Name	Type	Required	Description
job_id	str	Yes	Fine-tuning job UUID

Outputs

Name	Type	Description
response	Response	Updated job status

Usage Examples

Start and Cancel Jobs

from mistralai import Mistral

client = Mistral(api_key="your-key")

# Start a queued job
client.fine_tuning.jobs.start(job_id="job-abc123")

# Cancel a running job
client.fine_tuning.jobs.cancel(job_id="job-abc123")

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