Here are some of the rest call that can be used.
|rest /services/admin/summarization by_tstats=t splunk_server=local count=0 | eval datamodel=replace('summary.id',"DM_".'eai:acl.app'."_","") | join type=left datamodel [| rest /services/data/models splunk_server=local count=0 | table title acceleration.cron_schedule eai:digest | rename title as datamodel | rename acceleration.cron_schedule AS cron] | table datamodel eai:acl.app summary.access_time summary.is_inprogress summary.size summary.latest_time summary.complete summary.buckets_size summary.buckets cron summary.last_error summary.time_range summary.id summary.mod_time eai:digest summary.earliest_time summary.last_sid summary.access_count | rename summary.id AS summary_id, summary.time_range AS retention, summary.earliest_time as earliest, summary.latest_time as latest, eai:digest as digest | rename summary.* AS *, eai:acl.* AS * | sort datamodel
| rest /services/admin/summarization by_tstats=t splunk_server=local count=0 | table eai:acl.app summary.id summary.is_inprogress, summary.complete |rename eai:acl.app AS app summary.id AS name summary.complete AS completion summary.is_inprogress AS inprogress| eval datamodel=substr(name, 4+len(app)+1) | fields datamodel inprogress completion
you should see a 1 for completion if the DM is 100% complete, but this number will fluctuate since they are continuously backfilling every 5 min
If you are on Splunk Enterprise Security (ES), you could use
|`cim_datamodelinfo` |fields datamodel complete"
Where cim_datamodelinfo is macro in ES
