diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index a6f3095e974..260a9c3a34e 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -59130,6 +59130,8 @@
     "perplexity/anthropic/claude-fable-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 1e-05,
@@ -59140,6 +59142,8 @@
     "perplexity/anthropic/claude-opus-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
+        "prompt_cache_min_tokens": 512,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 5e-06,
@@ -59150,6 +59154,7 @@
     "perplexity/anthropic/claude-opus-4-8": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 5e-06,
@@ -59160,6 +59165,7 @@
     "perplexity/anthropic/claude-sonnet-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 2e-06,
@@ -59455,6 +59461,9 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "source": "https://openrouter.ai/anthropic/claude-fable-5",
         "supports_function_calling": true,
         "supports_tool_choice": true,
@@ -59476,6 +59485,9 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "source": "https://openrouter.ai/anthropic/claude-fable-5.1",
         "supports_function_calling": true,
         "supports_tool_choice": false,
@@ -59497,6 +59509,8 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
         "source": "https://openrouter.ai/anthropic/claude-opus-4.8",
         "supports_function_calling": true,
         "supports_tool_choice": true,
@@ -59517,6 +59531,8 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
         "source": "https://openrouter.ai/anthropic/claude-sonnet-5",
         "supports_function_calling": true,
         "supports_tool_choice": true,
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index a6f3095e974..260a9c3a34e 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -59130,6 +59130,8 @@
     "perplexity/anthropic/claude-fable-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 1e-05,
@@ -59140,6 +59142,8 @@
     "perplexity/anthropic/claude-opus-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
+        "prompt_cache_min_tokens": 512,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 5e-06,
@@ -59150,6 +59154,7 @@
     "perplexity/anthropic/claude-opus-4-8": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 5e-06,
@@ -59160,6 +59165,7 @@
     "perplexity/anthropic/claude-sonnet-5": {
         "litellm_provider": "perplexity",
         "mode": "responses",
+        "supports_adaptive_thinking": true,
         "supports_web_search": true,
         "supports_function_calling": true,
         "input_cost_per_token": 2e-06,
@@ -59455,6 +59461,9 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "source": "https://openrouter.ai/anthropic/claude-fable-5",
         "supports_function_calling": true,
         "supports_tool_choice": true,
@@ -59476,6 +59485,9 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
+        "thinking_always_on": true,
         "source": "https://openrouter.ai/anthropic/claude-fable-5.1",
         "supports_function_calling": true,
         "supports_tool_choice": false,
@@ -59497,6 +59509,8 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
         "source": "https://openrouter.ai/anthropic/claude-opus-4.8",
         "supports_function_calling": true,
         "supports_tool_choice": true,
@@ -59517,6 +59531,8 @@
         "max_output_tokens": 128000,
         "max_tokens": 128000,
         "mode": "chat",
+        "supports_sampling_params": false,
+        "supports_adaptive_thinking": true,
         "source": "https://openrouter.ai/anthropic/claude-sonnet-5",
         "supports_function_calling": true,
         "supports_tool_choice": true,