[ML] Move to the Cohere V2 API for new inference endpoints #129884
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davidkyle added >enhancement :ml 
| Pinging @elastic/ml-core (Team:ML) |
| Hi @davidkyle, I've created a changelog YAML for you. |
davidkyle commented Jun 23, 2025
...inference/src/main/java/org/elasticsearch/xpack/inference/services/cohere/CohereService.java Show resolved Hide resolved
...e/src/main/java/org/elasticsearch/xpack/inference/services/cohere/CohereServiceSettings.java Show resolved Hide resolved
...e/src/main/java/org/elasticsearch/xpack/inference/services/cohere/request/CohereRequest.java Show resolved Hide resolved
.../org/elasticsearch/xpack/inference/services/cohere/request/v1/CohereV1CompletionRequest.java Show resolved Hide resolved
.../org/elasticsearch/xpack/inference/services/cohere/request/v2/CohereV2CompletionRequest.java Show resolved Hide resolved
# Conflicts: # server/src/main/java/org/elasticsearch/TransportVersions.java
prwhelan approved these changes Jun 24, 2025
...e/src/main/java/org/elasticsearch/xpack/inference/services/cohere/CohereServiceSettings.java Show resolved Hide resolved
...e/src/main/java/org/elasticsearch/xpack/inference/services/cohere/CohereServiceSettings.java Outdated Show resolved Hide resolved
…inference/services/cohere/CohereServiceSettings.java Co-authored-by: Pat Whelan <pat.whelan@elastic.co>
| Test this please |
💔 Backport failed
You can use sqren/backport to manually backport by running |
mridula-s109 pushed a commit to mridula-s109/elasticsearch that referenced this pull request Jun 25, 2025
💚 All backports created successfully
Questions ?Please refer to the Backport tool documentation |
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The Cohere V2 API contains 2 changes that must be adapted for
modelparameter is no longer optionalinput_typeparameter is no longer optionalCreating an endpoint without a model now causes a validation exception.
input_typeis declared either in task_settings or in the inference call, if not set in either or these places input_type defaults to search_query.New inference endpoints will use the V2 API, existing endpoints will continue to use the V1 API. The user does not have the option of picking the V1 API in new endpoints. One possibly controversial aspect is that the API version is not surfaced to the user, the version is persisted with the model config but not included in the
GET _inferenceresponse. I implemented this behaviour because the user does not have the ability to pick the API, in retrospect hiding the version now seems confusing.The request classes have been moved to
org.elasticsearch.xpack.inference.services.cohere.request.v1and renamed. The new V2 request classes are inorg.elasticsearch.xpack.inference.services.cohere.request.v2(they are very similar).The upgrade test
CohereServiceUpgradeITtests that the old v1 endpoints still work after upgrading.