diff --git a/chapters/limits-and-specifications/concurrency.mdx b/chapters/limits-and-specifications/concurrency.mdx
index 64b7abc..7349f5a 100644
--- a/chapters/limits-and-specifications/concurrency.mdx
+++ b/chapters/limits-and-specifications/concurrency.mdx
@@ -29,6 +29,10 @@ The value listed below are default values. We can provide high concurrencies bas
   This refers to the maximum number of transcription (pre-recorder or real-time) that a user can process at the same time.
   For asynchronous transcriptions, Paid plan users can queue up to 300 requests, but only will still have 25 max processed concurrently.
 
+- **Realtime session duration** : (all plans)
+
+  A single realtime (live) transcription session cannot exceed **3 hours**. After 3 hours, the session will be terminated. For longer events, start a new session when approaching the limit.
+
 - **API level rate limit** : (same for every user)
 
   Which is the number of API calls that a user can make within a particular time frame.
diff --git a/chapters/limits-and-specifications/supported-formats.mdx b/chapters/limits-and-specifications/supported-formats.mdx
index 9323b0d..2ff091e 100644
--- a/chapters/limits-and-specifications/supported-formats.mdx
+++ b/chapters/limits-and-specifications/supported-formats.mdx
@@ -15,7 +15,7 @@ Those limits will be gradually lifted to ensure the full stability and performan
 </Tip>
 
 
-- **Audio length**: The maximum length of audio that can be transcribed in a single request is currently
+- **Audio length (pre-recorded)**: The maximum length of audio that can be transcribed in a single request is currently
 135 minutes. Attempts to transcribe longer audio files will result in an error.
 Direct YouTube links are limited to 120 minutes instead of 135 minutes.
 
@@ -23,6 +23,8 @@ Direct YouTube links are limited to 120 minutes instead of 135 minutes.
   We support up to 4h15 audio length for enterprise plans.
 </Tip>
 
+- **Realtime session duration**: For [live (realtime) transcription](/chapters/live-stt/quickstart), a single WebSocket session cannot exceed **3 hours**. The session will be terminated after 3 hours; for longer events, start a new session before reaching the limit.
+
 - **File size**: Audio files must not exceed 1000 MB in size. Larger files will not be accepted by the API.
 
 ### Splitting oversize audio files
diff --git a/chapters/live-stt/quickstart.mdx b/chapters/live-stt/quickstart.mdx
index ffe1369..e58b35b 100644
--- a/chapters/live-stt/quickstart.mdx
+++ b/chapters/live-stt/quickstart.mdx
@@ -6,6 +6,10 @@ description: How to transcribe live audio with Gladia's Real-time speech-to-text
 import LiveFlowFull from "/snippets/live-flow-full.mdx";
 import Samples from '/snippets/samples.mdx';
 
+<Note>
+A single realtime transcription session cannot exceed **3 hours**. For longer events, start a new session before reaching the limit. See [Concurrency and rate limits](/chapters/limits-and-specifications/concurrency) and [Supported files & duration](/chapters/limits-and-specifications/supported-formats) for details.
+</Note>
+
 <LiveFlowFull />
 <Tip>
 Want to know more about a specific feature? Check out our [Features chapter](/chapters/live-stt/features) for more details.