diff --git a/src/providers/cerebras/index.ts b/src/providers/cerebras/index.ts
index 7270563cb..e0aa742ac 100644
--- a/src/providers/cerebras/index.ts
+++ b/src/providers/cerebras/index.ts
@@ -4,14 +4,20 @@ import { ProviderConfigs } from '../types';
 import { cerebrasAPIConfig } from './api';
 
 export const cerebrasProviderAPIConfig: ProviderConfigs = {
-  chatComplete: chatCompleteParams([
-    'frequency_penalty',
-    'logit_bias',
-    'logprobs',
-    'presence_penalty',
-    'parallel_tool_calls',
-    'service_tier',
-  ]),
+  chatComplete: chatCompleteParams(
+    [
+      'frequency_penalty',
+      'logit_bias',
+      'logprobs',
+      'presence_penalty',
+      'parallel_tool_calls',
+      'service_tier',
+    ],
+    {},
+    {
+      max_completion_tokens: { param: 'max_tokens', min: 1 },
+    }
+  ),
   api: cerebrasAPIConfig,
   responseTransforms: responseTransformers(CEREBRAS, {
     chatComplete: true,
diff --git a/src/providers/groq/index.ts b/src/providers/groq/index.ts
index 7c008f664..54f655af8 100644
--- a/src/providers/groq/index.ts
+++ b/src/providers/groq/index.ts
@@ -16,6 +16,7 @@ const GroqConfig: ProviderConfigs = {
     {
       service_tier: { param: 'service_tier', required: false },
       reasoning_effort: { param: 'reasoning_effort', required: false },
+      max_completion_tokens: { param: 'max_tokens', min: 1 },
     }
   ),
   createTranscription: {},