## Python SDK Changes:

* `open_router.tts.create_speech()`:  `request.session_id` **Added**
* `open_router.stt.create_transcription()`:  `request.session_id` **Added**
* `open_router.embeddings.generate()`:  `request.session_id` **Added**
* `open_router.images.generate()`:  `request.session_id` **Added**
* `open_router.rerank.rerank()`:  `request.session_id` **Added**
* `open_router.video_generation.generate()`:  `request.session_id` **Added**

Author: speakeasybot

.speakeasy/gen.lock

@@ -36,7 +36,7 @@ generation:
   documentation: mintlify
   preApplyUnionDiscriminators: true
 python:
-  version: 1.1.150
+  version: 1.1.151
   additionalDependencies:
     dev: {}
     main: {}

.speakeasy/gen.yaml

@@ -11024,6 +11024,11 @@ components:
         seed:
           description: 'If specified, the generation will sample deterministically, such that repeated requests with the same seed and parameters should return the same result. Determinism is not guaranteed for all providers.'
           type: 'integer'
+        session_id:
+          description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+          example: 'session-1234'
+          maxLength: 256
+          type: 'string'
         size:
           description: 'Optional. A convenience shorthand for output dimensions — pass a tier ("2K", "4K") or explicit pixels ("2048x2048") and we normalize it to the right dimensions for the chosen provider. A tier size is equivalent to setting `resolution` and combines with `aspect_ratio`. An explicit pixel size is authoritative: a mismatched `resolution` or `aspect_ratio` alongside it is rejected with a 400.'
           example: '2K'
@@ -24681,6 +24686,11 @@ components:
           example: 'pcm'
           type: 'string'
           x-speakeasy-unknown-values: allow
+        session_id:
+          description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+          example: 'session-1234'
+          maxLength: 256
+          type: 'string'
         speed:
           description: 'Playback speed multiplier. Only used by models that support it (e.g. OpenAI TTS). Ignored by other providers.'
           example: 1
@@ -25182,6 +25192,11 @@ components:
           example: 'json'
           type: 'string'
           x-speakeasy-unknown-values: allow
+        session_id:
+          description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+          example: 'session-1234'
+          maxLength: 256
+          type: 'string'
         temperature:
           description: 'Sampling temperature for transcription'
           example: 0
@@ -27342,6 +27357,11 @@ components:
         seed:
           description: 'If specified, the generation will sample deterministically, such that repeated requests with the same seed and parameters should return the same result. Determinism is not guaranteed for all providers.'
           type: 'integer'
+        session_id:
+          description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+          example: 'session-1234'
+          maxLength: 256
+          type: 'string'
         size:
           description: 'Exact pixel dimensions of the generated video in "WIDTHxHEIGHT" format (e.g. "1280x720"). Interchangeable with resolution + aspect_ratio.'
           example: '1280x720'
@@ -31857,6 +31877,11 @@ paths:
                   allOf:
                     - $ref: '#/components/schemas/ProviderPreferences'
                     - description: 'Provider routing preferences for the request.'
+                session_id:
+                  description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+                  example: 'session-1234'
+                  maxLength: 256
+                  type: 'string'
                 trace:
                   $ref: '#/components/schemas/TraceConfig'
                 user:
@@ -39675,6 +39700,11 @@ paths:
                   description: 'The search query to rerank documents against'
                   example: 'What is the capital of France?'
                   type: 'string'
+                session_id:
+                  description: 'A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body value takes precedence. Maximum of 256 characters.'
+                  example: 'session-1234'
+                  maxLength: 256
+                  type: 'string'
                 top_n:
                   description: 'Number of most relevant documents to return'
                   example: 3

.speakeasy/out.openapi.yaml

@@ -2,19 +2,19 @@ speakeasyVersion: 1.787.0
 sources:
     OpenRouter API:
         sourceNamespace: open-router-chat-completions-api
-        sourceRevisionDigest: sha256:6ebcc679e84169af93fbe05f2d6314d4eedf46a65be547e2d8d8a6698c8392e7
-        sourceBlobDigest: sha256:9aa47ddffc027bad6317842403deb6dd83cc76f0b5912c72b50b416b0d8fabc3
+        sourceRevisionDigest: sha256:4375b0282081810779ada4291534f7e2f2187decb5310c1e7b66f1a0342f7103
+        sourceBlobDigest: sha256:1f82abd5653a7823db8675692794f6b32a0f74447a1aac741d650ea014f983af
         tags:
             - latest
             - 1.0.0
 targets:
     open-router:
         source: OpenRouter API
         sourceNamespace: open-router-chat-completions-api
-        sourceRevisionDigest: sha256:6ebcc679e84169af93fbe05f2d6314d4eedf46a65be547e2d8d8a6698c8392e7
-        sourceBlobDigest: sha256:9aa47ddffc027bad6317842403deb6dd83cc76f0b5912c72b50b416b0d8fabc3
+        sourceRevisionDigest: sha256:4375b0282081810779ada4291534f7e2f2187decb5310c1e7b66f1a0342f7103
+        sourceBlobDigest: sha256:1f82abd5653a7823db8675692794f6b32a0f74447a1aac741d650ea014f983af
         codeSamplesNamespace: open-router-python-code-samples
-        codeSamplesRevisionDigest: sha256:0a646d375bf04645af361c6a6efa54ac7787ebe41ee5c512bc08dee7c6c808db
+        codeSamplesRevisionDigest: sha256:575c2deec53a260cff11a3849a75f4e27fe65c3651311382ca749ce2fe0e7393
 workflow:
     workflowVersion: 1.0.0
     speakeasyVersion: 1.787.0

.speakeasy/workflow.lock

@@ -2289,4 +2289,14 @@ Based on:
 ### Generated
 - [python v1.1.150] .
 ### Releases
-- [PyPI v1.1.150] https://pypi.org/project/openrouter/1.1.150 - .
+- [PyPI v1.1.150] https://pypi.org/project/openrouter/1.1.150 - .
+
+## 2026-09-16 17:20:06
+### Changes
+Based on:
+- OpenAPI Doc  
+- Speakeasy CLI 1.787.0 (2.914.0) https://github.com/speakeasy-api/speakeasy
+### Generated
+- [python v1.1.151] .
+### Releases
+- [PyPI v1.1.151] https://pypi.org/project/openrouter/1.1.151 - .