diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 7e2590f696..303cffb407 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -20936,10 +20936,13 @@
     "gpt-5.4": {
         "cache_read_input_token_cost": 2.5e-07,
         "cache_read_input_token_cost_above_272k_tokens": 5e-07,
+        "cache_read_input_token_cost_flex": 1.3e-07,
         "cache_read_input_token_cost_priority": 5e-07,
         "cache_read_input_token_cost_above_272k_tokens_priority": 1e-06,
         "input_cost_per_token": 2.5e-06,
         "input_cost_per_token_above_272k_tokens": 5e-06,
+        "input_cost_per_token_flex": 1.25e-06,
+        "input_cost_per_token_batches": 1.25e-06,
         "input_cost_per_token_priority": 5e-06,
         "input_cost_per_token_above_272k_tokens_priority": 1e-05,
         "litellm_provider": "openai",
@@ -20949,6 +20952,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.5e-05,
         "output_cost_per_token_above_272k_tokens": 2.25e-05,
+        "output_cost_per_token_flex": 7.5e-06,
+        "output_cost_per_token_batches": 7.5e-06,
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         "output_cost_per_token_above_272k_tokens_priority": 3.375e-05,
         "supported_endpoints": [
@@ -20980,10 +20985,13 @@
     "gpt-5.4-2026-03-05": {
         "cache_read_input_token_cost": 2.5e-07,
         "cache_read_input_token_cost_above_272k_tokens": 5e-07,
+        "cache_read_input_token_cost_flex": 1.3e-07,
         "cache_read_input_token_cost_priority": 5e-07,
         "cache_read_input_token_cost_above_272k_tokens_priority": 1e-06,
         "input_cost_per_token": 2.5e-06,
         "input_cost_per_token_above_272k_tokens": 5e-06,
+        "input_cost_per_token_flex": 1.25e-06,
+        "input_cost_per_token_batches": 1.25e-06,
         "input_cost_per_token_priority": 5e-06,
         "input_cost_per_token_above_272k_tokens_priority": 1e-05,
         "litellm_provider": "openai",
@@ -20993,6 +21001,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.5e-05,
         "output_cost_per_token_above_272k_tokens": 2.25e-05,
+        "output_cost_per_token_flex": 7.5e-06,
+        "output_cost_per_token_batches": 7.5e-06,
         "output_cost_per_token_priority": 2.25e-05,
         "output_cost_per_token_above_272k_tokens_priority": 3.375e-05,
         "supported_endpoints": [
@@ -21026,6 +21036,8 @@
         "cache_read_input_token_cost_above_272k_tokens_priority": 1.2e-05,
         "input_cost_per_token": 3e-05,
         "input_cost_per_token_above_272k_tokens": 6e-05,
+        "input_cost_per_token_flex": 1.5e-05,
+        "input_cost_per_token_batches": 1.5e-05,
         "input_cost_per_token_priority": 6e-05,
         "input_cost_per_token_above_272k_tokens_priority": 1.2e-04,
         "litellm_provider": "openai",
@@ -21035,6 +21047,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.8e-04,
         "output_cost_per_token_above_272k_tokens": 2.7e-04,
+        "output_cost_per_token_flex": 9e-05,
+        "output_cost_per_token_batches": 9e-05,
         "output_cost_per_token_priority": 2.7e-04,
         "output_cost_per_token_above_272k_tokens_priority": 4.05e-04,
         "supported_endpoints": [
@@ -21071,6 +21085,8 @@
         "cache_read_input_token_cost_above_272k_tokens_priority": 1.2e-05,
         "input_cost_per_token": 3e-05,
         "input_cost_per_token_above_272k_tokens": 6e-05,
+        "input_cost_per_token_flex": 1.5e-05,
+        "input_cost_per_token_batches": 1.5e-05,
         "input_cost_per_token_priority": 6e-05,
         "input_cost_per_token_above_272k_tokens_priority": 1.2e-04,
         "litellm_provider": "openai",
@@ -21080,6 +21096,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.8e-04,
         "output_cost_per_token_above_272k_tokens": 2.7e-04,
+        "output_cost_per_token_flex": 9e-05,
+        "output_cost_per_token_batches": 9e-05,
         "output_cost_per_token_priority": 2.7e-04,
         "output_cost_per_token_above_272k_tokens_priority": 4.05e-04,
         "supported_endpoints": [
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 7e2590f696..303cffb407 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -20936,10 +20936,13 @@
     "gpt-5.4": {
         "cache_read_input_token_cost": 2.5e-07,
         "cache_read_input_token_cost_above_272k_tokens": 5e-07,
+        "cache_read_input_token_cost_flex": 1.3e-07,
         "cache_read_input_token_cost_priority": 5e-07,
         "cache_read_input_token_cost_above_272k_tokens_priority": 1e-06,
         "input_cost_per_token": 2.5e-06,
         "input_cost_per_token_above_272k_tokens": 5e-06,
+        "input_cost_per_token_flex": 1.25e-06,
+        "input_cost_per_token_batches": 1.25e-06,
         "input_cost_per_token_priority": 5e-06,
         "input_cost_per_token_above_272k_tokens_priority": 1e-05,
         "litellm_provider": "openai",
@@ -20949,6 +20952,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.5e-05,
         "output_cost_per_token_above_272k_tokens": 2.25e-05,
+        "output_cost_per_token_flex": 7.5e-06,
+        "output_cost_per_token_batches": 7.5e-06,
         "output_cost_per_token_priority": 2.25e-05,
         "output_cost_per_token_above_272k_tokens_priority": 3.375e-05,
         "supported_endpoints": [
@@ -20980,10 +20985,13 @@
     "gpt-5.4-2026-03-05": {
         "cache_read_input_token_cost": 2.5e-07,
         "cache_read_input_token_cost_above_272k_tokens": 5e-07,
+        "cache_read_input_token_cost_flex": 1.3e-07,
         "cache_read_input_token_cost_priority": 5e-07,
         "cache_read_input_token_cost_above_272k_tokens_priority": 1e-06,
         "input_cost_per_token": 2.5e-06,
         "input_cost_per_token_above_272k_tokens": 5e-06,
+        "input_cost_per_token_flex": 1.25e-06,
+        "input_cost_per_token_batches": 1.25e-06,
         "input_cost_per_token_priority": 5e-06,
         "input_cost_per_token_above_272k_tokens_priority": 1e-05,
         "litellm_provider": "openai",
@@ -20993,6 +21001,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.5e-05,
         "output_cost_per_token_above_272k_tokens": 2.25e-05,
+        "output_cost_per_token_flex": 7.5e-06,
+        "output_cost_per_token_batches": 7.5e-06,
         "output_cost_per_token_priority": 2.25e-05,
         "output_cost_per_token_above_272k_tokens_priority": 3.375e-05,
         "supported_endpoints": [
@@ -21026,6 +21036,8 @@
         "cache_read_input_token_cost_above_272k_tokens_priority": 1.2e-05,
         "input_cost_per_token": 3e-05,
         "input_cost_per_token_above_272k_tokens": 6e-05,
+        "input_cost_per_token_flex": 1.5e-05,
+        "input_cost_per_token_batches": 1.5e-05,
         "input_cost_per_token_priority": 6e-05,
         "input_cost_per_token_above_272k_tokens_priority": 1.2e-04,
         "litellm_provider": "openai",
@@ -21035,6 +21047,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.8e-04,
         "output_cost_per_token_above_272k_tokens": 2.7e-04,
+        "output_cost_per_token_flex": 9e-05,
+        "output_cost_per_token_batches": 9e-05,
         "output_cost_per_token_priority": 2.7e-04,
         "output_cost_per_token_above_272k_tokens_priority": 4.05e-04,
         "supported_endpoints": [
@@ -21071,6 +21085,8 @@
         "cache_read_input_token_cost_above_272k_tokens_priority": 1.2e-05,
         "input_cost_per_token": 3e-05,
         "input_cost_per_token_above_272k_tokens": 6e-05,
+        "input_cost_per_token_flex": 1.5e-05,
+        "input_cost_per_token_batches": 1.5e-05,
         "input_cost_per_token_priority": 6e-05,
         "input_cost_per_token_above_272k_tokens_priority": 1.2e-04,
         "litellm_provider": "openai",
@@ -21080,6 +21096,8 @@
         "mode": "chat",
         "output_cost_per_token": 1.8e-04,
         "output_cost_per_token_above_272k_tokens": 2.7e-04,
+        "output_cost_per_token_flex": 9e-05,
+        "output_cost_per_token_batches": 9e-05,
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