Deprecations and Removals

We are excited to announce a change in our software versioning system! This new system will make it easier for you to track releases by showing both their order and year, providing clearer insight into our updates and patches. Moving forward, we will use a new format: YEAR.MINOR_RELEASE.PATCH_LEVEL, where:

• YEAR is the year of the release, for example, 2025.
• MINOR_RELEASE is the Nth minor release of the year, for example, the 10th minor release in 2025 is 10.
• PATCH is the Nth patch for a minor release, for example, the 1st patch for the 10th minor release is 1. If no patches are released, the number is 0.

This page provides a list of removals and deprecations for native Cognigy features, as well as those that rely on third-party dependencies, such as LLMs (Large Language Models), Endpoints, and other external connectors.

Terminology

• Deprecations. A feature is considered as outdated and no longer recommended for use, with support limited to critical fixes only. The deprecation process starts with an announcement and continues until the feature is removed in future releases.
• Removals. A feature is completely removed and no longer supported after the specified removal date.

Cognigy Features

The table lists Cognigy features that are deprecated and will be removed in future releases.

Feature	Deprecation Date	Removal date	Notes
GET /v2.0/projects/{projectId}/logs API method	Cognigy.AI 2026.7.0	Cognigy.AI 2026.20.0	Use the GET /v2.1/projects/{projectId}/logs API method instead.
States tab in the NLU settings in the Flow editor, Set State and Reset State Nodes	Cognigy.AI 2026.9.0	Cognigy.AI 2026.16.0	This deprecation doesn’t affect runtime behavior. After the removal, existing Flows containing these Nodes will remain fully supported and continue to run as expected. As an alternative, you can use Intent Conditions for controlling Intent recognition.
States in the Interaction Panel, States functions, and States API methods	Cognigy.AI 2026.7.0	Cognigy.AI 2026.12.0	Delete your States and retrain your NLU model before the removal. Use Intent Conditions as an alternative for controlling Intent recognition.
Support for the Completions API for custom LLMs	Cognigy.AI 2026.6.0	Cognigy.AI 2026.24.0	Refer to your LLM provider’s reference to switch to the appropriate Chat API before the removal date.
DELETE /v2.0/conversations/{sessionId} API method	Cognigy.AI 2026.5.0	Cognigy.AI 2026.18.0	Use the DELETE /v2.1/conversations/{sessionId} API method instead.
OAuth2 authentication in the Send SMTP Email Node	Cognigy.AI 2026.4.0	Cognigy.AI 2026.16.0	Switch to the OAuth2 Client Credentials authentication method.
Step Explorer and Message Explorer in Insights	Cognigy.AI 2026.4.0	Cognigy.AI 2026.17.0	-
Cognigy.AI OData endpoint 2.3	February, 2026	To be determined	Switch to the Cognigy.AI OData 2.4 endpoint.
Salesforce Service Cloud handover provider	February 14, 2026	To be determined	Salesforce is retiring LiveAgent, Salesforce Chat, Embedded Chat, and Service Chat. Migrate to Salesforce Messaging for In-App and Web before the removal date. For more information, read the Salesforce release notes.
Genesys Cloud Guest Chat handover provider	June 11, 2025	To be determined	Due to Genesys ACD Web Chat v2 deprecation, migrate to Genesys Cloud Open Messaging.
WebSocket and HTTP Webhook for Genesys Cloud Open Messaging	April 29, 2025	To be determined	Migrate to Amazon EventBridge
Conversation counter API endpoint 2.0	April 29, 2025	To be determined	Use the conversation counter API endpoint 3.0.
Cognigy.AI OData 2.3	December, 2025	To be determined	Switch to the Cognigy.AI OData 2.4 endpoint.
POST /v2.0/optionsresolver API method for SaaS installations	-	Cognigy.AI 2026.3.0	If you use this method, update your setup before the release date to avoid disruptions.
Webchat v2	August 20, 2024	February 2026	Migrate to new Webchat v3.
LLM Prompt Node (legacy)	2025.13.0	Cognigy.AI 2026.11.0	Use the LLM Prompt Node instead.
Handover Providers section in the Endpoint settings	March 18, 2025	The end of January 2026	Migrate to the new Handover Providers interface.
say verb with empty text content	-	April 29, 2025	This removal affects the following Voice Gateway Nodes: Say, Question, and Optional Question.
actions.think, api.think	April 1, 2025	June 2025	Use api.thinkV2() and actions.thinkV2() instead.
Insights Beta API	April 1, 2025	June 10, 2025	Use the Cognigy.AI OData endpoint.
Intent Sentence Generation, Lexicon Generation, Flow Generation, Adaptive Card Generation in Project settings	April 15, 2025	June 24, 2025	Select the LLM for all these features from the Design-Time Generative LLM Features list.
AudioCodes Nodes and Generic Voice Nodes	March 4, 2025	Q2 2026	After the end of February 2025, you won’t be able to create new Nodes, but you can still edit or clone existing ones. Flows with these Nodes will continue to work after the deprecation date. Consider the Cognigy Voice Gateway product and its Voice Gateway Nodes as an alternative to AudioCodes.
AudioCodes Endpoint and AudioCodes channel	April 2025	Q2 2026	Migrate to the Cognigy Voice Gateway product and use its Voice Gateway Endpoint as an alternative to AudioCodes.
Understood Messages in the Intent Trainer and Insights reports (Overview and NLU Performance)	December 2024	From Insights reports: Cognigy.AI 2025.19	Use the Goals and Tasks concept in order to measure whether your AI Agent understood a particular phrase. The Understood Messages concept relies on specific rules that don’t work for all customers.
understood field in the Cognigy.AI OData endpoint	December 2024	Cognigy.AI 2026.1.0	Use the Goals collection in the Cognigy.AI OData endpoint.
Support for the request-promise library in transformers	Cognigy.AI 2025.25.0	-	Review your transformer code to ensure it is compatible with the Axios library.
Any Slots	-	September 3, 2024	Use the LLM Entity Extraction Node to identify Slots in the user input via LLMs.
GPT Conversation	-	September 17, 2024	If you are still using these Nodes, they will continue to work in the existing Flows created before Cognigy.AI 4.85.

Third-Party Products

LLMs

The table lists LLMs that are deprecated and will be removed. Once the LLM provider removes the model, it will stop working in Cognigy.AI. This change could cause disruptions to your AI Agent if the model is still being used in the Flow. If you’ve added models from the list as custom models in Cognigy.AI, switch to newer models before the shutdown date.

Models	Deprecation Date	Removal Date	Notes
OpenAI
gpt-4.1-nano	-	October 23, 2026	For more information, read the OpenAI documentation.
gpt-5-chat-latest	-	July 23, 2026	For more information, read the OpenAI documentation.
gpt-3.5-turbo-0301, gpt-3.5-turbo-0613, gpt-3.5-turbo-16k-0613	January 10, 2024	September 13, 2024	For more information, read the OpenAI documentation: gpt-3.5-turbo-0613 and gpt-3.5-turbo-16k-0613 and gpt-3.5-turbo-0301.
gpt-4-vision-preview, gpt-4-1106-vision-preview	June 17, 2024	December 6, 2024	For more information, read the OpenAI documentation.
Google GenAI
gemini-embedding-001	-	July 14, 2026	Migrate to gemini-embedding-2. For more information, read the Google Vertex AI documentation.
Google Gemini
gemini-2.5-pro	-	October 16, 2026	The model remains functional until Google’s shutdown date. Migrate to gemini-3.5-flash or another supported model. For more information, read the Google Vertex AI documentation.
gemini-2.5-flash	-	October 16, 2026	For more information, read the Google Vertex AI documentation.
gemini-embedding-001	-	July 14, 2026	For more information, read the Google Vertex AI documentation.
gemini-2.5-flash-lite	-	Not before October 16, 2026	For more information, read the Google Vertex AI documentation. Google recommends migrating to gemini-2.5-flash.
gemini-2.0-flash and gemini-2.0-flash-lite	-	June 1, 2026	For more information, read the Google Vertex AI documentation.
gemini-1.5-flash	-	September 24, 2025	For more information, read the Google Vertex AI documentation.
gemini-1.5-pro	-	September 24, 2025	For more information, read the Google Vertex AI documentation.
gemini-1.0-pro	February 15, 2024	April 21, 2025	For more information, read the Google Vertex AI documentation. Google recommends migrating to Gemini 2.0 Flash.
gemini-3.1-flash-lite-preview	March 3, 2026	May 25, 2026	For more information, read the Google Vertex AI documentation. Google recommends migrating to Gemini 3.1 Flash Lite.
Google Vertex AI	-
chat-bison@002, chat-bison-32k@002, code-bison@002, code-bison-32k@002, codechat-bison@002, codechat-bison-32k@002, text-bison@002, text-bison-32k@002	-	October 9, 2024	For more information, read the Google Vertex AI documentation. Google recommends migrating to Gemini 2.0 Flash by using the following guide.
text-bison-001	May 2023	April 21, 2025	Google recommends migrating to Gemini 2.0 Flash Lite. For more information, read the Google Vertex AI documentation.
Anthropic
claude-3-haiku	February 19, 2026	Cognigy.AI 2026.10.0	Migrate to claude-haiku-4-5. For more information, read the Anthropic documentation.
claude-sonnet-3-7	October 28, 2025	Cognigy.AI 2026.5.0	For more information, read the Anthropic documentation.
claude-3-opus	June 30, 2025	January 2026	For more information, read the Anthropic documentation.
claude-3-sonnet	January 21, 2025	July 21, 2025	For more information, read the Anthropic documentation.
claude-1.0, claude-1.1, claude-1.2, claude-1.3, claude-1.3-100k, claude-instant-1.0, claude-instant-1.1, claude-instant-1.1-100k, claude-instant-1.2	September 4, 2024	November 6, 2024	For more information, read the Anthropic documentation. Anthropic recommends migrating to claude-3-haiku-20240307.
Microsoft Azure OpenAI
gpt-4o	-	October 1, 2026	Migrate to gpt-5.1 before the removal date. For more information, read the Azure OpenAI documentation.
gpt-4o-mini	-	October 1, 2026	Migrate to gpt-5-mini the removal date. For more information, read the Azure OpenAI documentation.
gpt-4.1, gpt-4.1-mini, gpt-4.1-nano	-	October 14, 2026	Migrate to a more recent model before the removal date. For more information, read the Azure OpenAI documentation.
gpt-35-turbo (version 1106)	-	No earlier than November 17, 2024	For more information, read the Azure OpenAI documentation.
gpt-35-turbo-16k (version 0613), gpt-35-turbo (versions 0613, 0301)	-	January 27, 2025	For more information, read the Azure OpenAI documentation.
gpt-35-turbo (version 0125)	-	No earlier than February 22, 2025	For more information, read the Azure OpenAI documentation.
Mistral AI
pixtral-large-latest	-	May 31, 2026	Mistral removed this model from their API. Migrate to another Mistral model such as mistral-large-latest. Requests to this model return a “model retired” error. For more information, read the Mistral AI documentation.
pixtral-12b-2409	-	December 31, 2025	For more information, read the Mistral AI documentation.
mistral-medium-latest	-	August 31, 2026	For more information, read the Mistral AI documentation.
Amazon Bedrock
amazon.nova-premier-v1:0	-	September 14, 2026	For more information, read the Amazon Bedrock documentation.
anthropic.claude-3-5-sonnet-20240620-v1:0	March 1, 2026	Cognigy.AI 2026.10.0	For more information, read the Amazon Bedrock documentation.
Aleph Alpha
luminous	Cognigy.AI 2026.10.0	Cognigy.AI 2026.24.0	Select other models to support your use case.
luminous-embedding-128	Cognigy.AI 2026.10.0	Cognigy.AI 2026.11.0	Select other models to support your use case.

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