diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 12ee3833ea0..02adbbed736 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -26158,7 +26158,7 @@
         "output_cost_per_token_batches": 1.5e-06,
         "rpm": 1000,
         "tpm": 4000000,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-image",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26243,7 +26243,7 @@
         "output_cost_per_token": 1.5e-06,
         "output_cost_per_token_batches": 7.5e-07,
         "rpm": 1000,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-lite-image",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26815,6 +26815,7 @@
         "google_maps_grounding_cost_per_query": 0.014
     },
     "gemini/gemini-3.1-flash-lite": {
+        "cache_read_input_audio_token_cost": 5e-08,
         "cache_read_input_token_cost": 2.5e-08,
         "cache_read_input_token_cost_flex": 1.25e-08,
         "cache_read_input_token_cost_priority": 4.5e-08,
@@ -26835,7 +26836,7 @@
         "output_cost_per_token_flex": 7.5e-07,
         "output_cost_per_token_priority": 2.7e-06,
         "rpm": 15,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-lite",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26872,7 +26873,8 @@
             "search_context_size_high": 0.014
         },
         "web_search_billing_unit": "per_query",
-        "google_maps_grounding_cost_per_query": 0.014
+        "google_maps_grounding_cost_per_query": 0.014,
+        "input_cost_per_audio_token_batches": 2.5e-07
     },
     "gemini/gemini-3.5-flash-lite": {
         "cache_read_input_token_cost": 3e-08,
@@ -27280,7 +27282,7 @@
         "output_cost_per_token_above_200k_tokens": 1.8e-05,
         "output_cost_per_token_batches": 6e-06,
         "rpm": 2000,
-        "source": "https://ai.google.dev/gemini-api/docs/models#gemini-3.1-pro-preview",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -27315,13 +27317,16 @@
         "output_cost_per_token_above_200k_tokens_priority": 3.24e-05,
         "cache_read_input_token_cost_priority": 3.6e-07,
         "cache_read_input_token_cost_above_200k_tokens_priority": 7.2e-07,
+        "cache_read_input_token_cost_flex": 2e-07,
         "search_context_cost_per_query": {
             "search_context_size_low": 0.014,
             "search_context_size_medium": 0.014,
             "search_context_size_high": 0.014
         },
         "web_search_billing_unit": "per_query",
-        "google_maps_grounding_cost_per_query": 0.014
+        "google_maps_grounding_cost_per_query": 0.014,
+        "input_cost_per_token_flex": 1e-06,
+        "output_cost_per_token_flex": 6e-06
     },
     "gemini/gemini-3.1-pro-preview-customtools": {
         "prompt_cache_min_tokens": 4096,
@@ -55540,7 +55545,7 @@
         "mode": "realtime",
         "output_cost_per_audio_token": 1.2e-05,
         "output_cost_per_token": 4.5e-06,
-        "source": "https://cloud.google.com/gemini-enterprise-agent-platform/generative-ai/pricing",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/realtime"
         ],
@@ -55658,7 +55663,7 @@
         "mode": "realtime",
         "output_cost_per_audio_token": 1.2e-05,
         "output_cost_per_token": 4.5e-06,
-        "source": "https://cloud.google.com/gemini-enterprise-agent-platform/generative-ai/pricing",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/realtime"
         ],
@@ -55684,13 +55689,15 @@
     },
     "gemini/gemini-3.1-flash-tts-preview": {
         "input_cost_per_token": 1e-06,
+        "input_cost_per_token_batches": 5e-07,
         "litellm_provider": "gemini",
         "max_input_tokens": 8192,
         "max_output_tokens": 16384,
         "max_tokens": 16384,
         "mode": "audio_speech",
+        "output_cost_per_audio_token": 2e-05,
         "output_cost_per_token": 2e-05,
-        "source": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-tts-preview",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/audio/speech"
         ],
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 12ee3833ea0..02adbbed736 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -26158,7 +26158,7 @@
         "output_cost_per_token_batches": 1.5e-06,
         "rpm": 1000,
         "tpm": 4000000,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-image",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26243,7 +26243,7 @@
         "output_cost_per_token": 1.5e-06,
         "output_cost_per_token_batches": 7.5e-07,
         "rpm": 1000,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-lite-image",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26815,6 +26815,7 @@
         "google_maps_grounding_cost_per_query": 0.014
     },
     "gemini/gemini-3.1-flash-lite": {
+        "cache_read_input_audio_token_cost": 5e-08,
         "cache_read_input_token_cost": 2.5e-08,
         "cache_read_input_token_cost_flex": 1.25e-08,
         "cache_read_input_token_cost_priority": 4.5e-08,
@@ -26835,7 +26836,7 @@
         "output_cost_per_token_flex": 7.5e-07,
         "output_cost_per_token_priority": 2.7e-06,
         "rpm": 15,
-        "source": "https://ai.google.dev/gemini-api/docs/pricing#gemini-3.1-flash-lite",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -26872,7 +26873,8 @@
             "search_context_size_high": 0.014
         },
         "web_search_billing_unit": "per_query",
-        "google_maps_grounding_cost_per_query": 0.014
+        "google_maps_grounding_cost_per_query": 0.014,
+        "input_cost_per_audio_token_batches": 2.5e-07
     },
     "gemini/gemini-3.5-flash-lite": {
         "cache_read_input_token_cost": 3e-08,
@@ -27280,7 +27282,7 @@
         "output_cost_per_token_above_200k_tokens": 1.8e-05,
         "output_cost_per_token_batches": 6e-06,
         "rpm": 2000,
-        "source": "https://ai.google.dev/gemini-api/docs/models#gemini-3.1-pro-preview",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/chat/completions",
             "/v1/completions",
@@ -27315,13 +27317,16 @@
         "output_cost_per_token_above_200k_tokens_priority": 3.24e-05,
         "cache_read_input_token_cost_priority": 3.6e-07,
         "cache_read_input_token_cost_above_200k_tokens_priority": 7.2e-07,
+        "cache_read_input_token_cost_flex": 2e-07,
         "search_context_cost_per_query": {
             "search_context_size_low": 0.014,
             "search_context_size_medium": 0.014,
             "search_context_size_high": 0.014
         },
         "web_search_billing_unit": "per_query",
-        "google_maps_grounding_cost_per_query": 0.014
+        "google_maps_grounding_cost_per_query": 0.014,
+        "input_cost_per_token_flex": 1e-06,
+        "output_cost_per_token_flex": 6e-06
     },
     "gemini/gemini-3.1-pro-preview-customtools": {
         "prompt_cache_min_tokens": 4096,
@@ -55540,7 +55545,7 @@
         "mode": "realtime",
         "output_cost_per_audio_token": 1.2e-05,
         "output_cost_per_token": 4.5e-06,
-        "source": "https://cloud.google.com/gemini-enterprise-agent-platform/generative-ai/pricing",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/realtime"
         ],
@@ -55658,7 +55663,7 @@
         "mode": "realtime",
         "output_cost_per_audio_token": 1.2e-05,
         "output_cost_per_token": 4.5e-06,
-        "source": "https://cloud.google.com/gemini-enterprise-agent-platform/generative-ai/pricing",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/realtime"
         ],
@@ -55684,13 +55689,15 @@
     },
     "gemini/gemini-3.1-flash-tts-preview": {
         "input_cost_per_token": 1e-06,
+        "input_cost_per_token_batches": 5e-07,
         "litellm_provider": "gemini",
         "max_input_tokens": 8192,
         "max_output_tokens": 16384,
         "max_tokens": 16384,
         "mode": "audio_speech",
+        "output_cost_per_audio_token": 2e-05,
         "output_cost_per_token": 2e-05,
-        "source": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-tts-preview",
+        "source": "https://ai.google.dev/gemini-api/docs/pricing",
         "supported_endpoints": [
             "/v1/audio/speech"
         ],