diff --git a/lib/constants.ts b/lib/constants.ts
index 552a3244..3f2de312 100644
--- a/lib/constants.ts
+++ b/lib/constants.ts
@@ -30,6 +30,8 @@ export const TIKTOKEN_MODEL_MAPPING: Record<string, TiktokenEncoding> = {
   "gpt-4": "cl100k_base",
   "gpt-4o": "o200k_base",
   "gpt-4o-2024-05-13": "o200k_base",
+  "gpt-4o-mini": "o200k_base",
+  "gpt-4o-mini-2024-07-18": "o200k_base",
 };
 
 export type LangTraceAttributes = LLMSpanAttributes &
@@ -49,6 +51,14 @@ export interface CostTableEntry {
 
 // cost per 1000 tokens
 export const OPENAI_PRICING: Record<string, CostTableEntry> = {
+  "gpt-4o-mini": {
+    input: 0.00015,
+    output: 0.0006,
+  },
+  "gpt-4o-mini-2024-07-18": {
+    input: 0.00015,
+    output: 0.0006,
+  },
   "gpt-4o": {
     input: 0.005,
     output: 0.015,
diff --git a/lib/types/playground_types.ts b/lib/types/playground_types.ts
index c3eb018b..d8e681b0 100644
--- a/lib/types/playground_types.ts
+++ b/lib/types/playground_types.ts
@@ -6,6 +6,8 @@ export interface Conversation {
 }
 
 export enum OpenAIModel {
+  "gpt-4o-mini" = "gpt-4o-mini",
+  "gpt-4o-mini-2024-07-18" = "gpt-4o-mini-2024-07-18",
   "gpt-4o" = "gpt-4o",
   "gpt-4o-2024-05-13" = "gpt-4o-2024-05-13",
   "gpt-4-turbo-preview" = "gpt-4-turbo-preview",
@@ -31,6 +33,14 @@ export enum AnthropicModel {
 }
 
 export const openAIModels = [
+  {
+    value: "gpt-4o-mini",
+    label: "GPT-4 Omni Mini",
+  },
+  {
+    value: "gpt-4o-mini-2024-07-18",
+    label: "GPT-4 Omni Mini (2024-07-18)",
+  },
   {
     value: "gpt-4o",
     label: "GPT-4 Omni",