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Add supported providers to prompt caching doc (#26124)

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* Add supported providers to prompt caching doc

* Move Z.ai / GLM to cache_control marker list

* Mark xAI models as supporting prompt caching

* Narrow xAI prompt caching flag to models with documented cache pricing

* Add prompt caching flag to grok-4, grok-4-0709, grok-4-latest

---------

Co-authored-by: Michael Riad Zaky <michaelr@Michaels-MacBook-Air.local>
This commit is contained in:
Michael-RZ-Berri
2026-04-20 15:25:21 -07:00
committed by GitHub
co-authored by Michael Riad Zaky
parent 386f334fee
commit 4f823cedac
3 changed files with 50 additions and 6 deletions
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docs/my-website/docs/completion/prompt_caching.md
+1
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@@ -10,6 +10,7 @@ Supported Providers:
- Vertex AI (`vertex_ai/`, `vertex_ai_beta/`)
- Bedrock (`bedrock/`, `bedrock/invoke/`, `bedrock/converse`) ([All models bedrock supports prompt caching on](https://docs.aws.amazon.com/bedrock/latest/userguide/prompt-caching.html))
- Deepseek API (`deepseek/`)
- xAI (`xai/`)
For the supported providers, LiteLLM follows the OpenAI prompt caching usage object format:
docs/my-website/docs/tutorials/prompt_caching.md
+16
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@@ -8,6 +8,22 @@ Reduce costs by up to 90% by using LiteLLM to auto-inject prompt caching checkpo
<Image img={require('../../img/auto_prompt_caching.png')} style={{ width: '800px', height: 'auto' }} />
Supported Providers (`cache_control` marker):
- Anthropic API (`anthropic/`)
- AWS Bedrock - Claude (`bedrock/`)
- Vertex AI - Claude and Gemini (`vertex_ai/`)
- Google AI Studio - Gemini (`gemini/`)
- Azure AI - Claude (`azure_ai/`)
- OpenRouter - Claude, Gemini, MiniMax, GLM, z-ai routes (`openrouter/`)
- Databricks - Claude (`databricks/`)
- DashScope / Qwen (`dashscope/`)
- MiniMax (`minimax/`)
- Z.ai / GLM (`zai/`)
Provider Managed (automatic, no marker needed):
- OpenAI (`openai/`)
- DeepSeek (`deepseek/`)
- xAI (`xai/`)
## How it works
model_prices_and_context_window.json
+33 -6
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@@ -33302,6 +33302,7 @@
"output_cost_per_token": 1.5e-05,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": false,
"supports_tool_choice": true,
"supports_web_search": true
@@ -33317,6 +33318,7 @@
"output_cost_per_token": 1.5e-05,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": false,
"supports_tool_choice": true,
"supports_web_search": true
@@ -33332,6 +33334,7 @@
"output_cost_per_token": 2.5e-05,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": false,
"supports_tool_choice": true,
"supports_web_search": true
@@ -33347,6 +33350,7 @@
"output_cost_per_token": 2.5e-05,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": false,
"supports_tool_choice": true,
"supports_web_search": true
@@ -33362,6 +33366,7 @@
"output_cost_per_token": 1.5e-05,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": false,
"supports_tool_choice": true,
"supports_web_search": true
@@ -33378,6 +33383,7 @@
"output_cost_per_token": 5e-07,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33395,6 +33401,7 @@
"output_cost_per_token": 5e-07,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33411,6 +33418,7 @@
"output_cost_per_token": 4e-06,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33427,6 +33435,7 @@
"output_cost_per_token": 4e-06,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33443,6 +33452,7 @@
"output_cost_per_token": 4e-06,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33459,6 +33469,7 @@
"output_cost_per_token": 5e-07,
"source": "https://x.ai/api#pricing",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": false,
"supports_tool_choice": true,
@@ -33474,38 +33485,41 @@
"output_cost_per_token": 1.5e-05,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_web_search": true
},
"xai/grok-4-fast-reasoning": {
"cache_read_input_token_cost": 5e-08,
"input_cost_per_token": 2e-07,
"input_cost_per_token_above_128k_tokens": 4e-07,
"litellm_provider": "xai",
"max_input_tokens": 2000000.0,
"max_output_tokens": 2000000.0,
"max_tokens": 2000000.0,
"mode": "chat",
"input_cost_per_token": 2e-07,
"input_cost_per_token_above_128k_tokens": 4e-07,
"output_cost_per_token": 5e-07,
"output_cost_per_token_above_128k_tokens": 1e-06,
"cache_read_input_token_cost": 5e-08,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_web_search": true
},
"xai/grok-4-fast-non-reasoning": {
"cache_read_input_token_cost": 5e-08,
"input_cost_per_token": 2e-07,
"input_cost_per_token_above_128k_tokens": 4e-07,
"litellm_provider": "xai",
"max_input_tokens": 2000000.0,
"max_output_tokens": 2000000.0,
"cache_read_input_token_cost": 5e-08,
"max_tokens": 2000000.0,
"mode": "chat",
"input_cost_per_token": 2e-07,
"input_cost_per_token_above_128k_tokens": 4e-07,
"output_cost_per_token": 5e-07,
"output_cost_per_token_above_128k_tokens": 1e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_web_search": true
},
@@ -33521,6 +33535,7 @@
"output_cost_per_token_above_128k_tokens": 3e-05,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_web_search": true
},
@@ -33536,6 +33551,7 @@
"output_cost_per_token_above_128k_tokens": 3e-05,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_web_search": true
},
@@ -33553,6 +33569,7 @@
"source": "https://docs.x.ai/docs/models/grok-4-1-fast-reasoning",
"supports_audio_input": true,
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_tool_choice": true,
@@ -33573,6 +33590,7 @@
"source": "https://docs.x.ai/docs/models/grok-4-1-fast-reasoning",
"supports_audio_input": true,
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_tool_choice": true,
@@ -33593,6 +33611,7 @@
"source": "https://docs.x.ai/docs/models/grok-4-1-fast-reasoning",
"supports_audio_input": true,
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_response_schema": true,
"supports_tool_choice": true,
@@ -33613,6 +33632,7 @@
"source": "https://docs.x.ai/docs/models/grok-4-1-fast-non-reasoning",
"supports_audio_input": true,
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": true,
"supports_tool_choice": true,
"supports_vision": true,
@@ -33632,6 +33652,7 @@
"source": "https://docs.x.ai/docs/models/grok-4-1-fast-non-reasoning",
"supports_audio_input": true,
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_response_schema": true,
"supports_tool_choice": true,
"supports_vision": true,
@@ -33648,6 +33669,7 @@
"output_cost_per_token": 6e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_tool_choice": true,
"supports_vision": true,
@@ -33664,6 +33686,7 @@
"output_cost_per_token": 6e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_tool_choice": true,
"supports_vision": true,
@@ -33696,6 +33719,7 @@
"output_cost_per_token": 6e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_tool_choice": true,
"supports_vision": true,
"supports_web_search": true
@@ -33724,6 +33748,7 @@
"output_cost_per_token": 1.5e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_tool_choice": true
},
@@ -33738,6 +33763,7 @@
"output_cost_per_token": 1.5e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_tool_choice": true
},
@@ -33752,6 +33778,7 @@
"output_cost_per_token": 1.5e-06,
"source": "https://docs.x.ai/docs/models",
"supports_function_calling": true,
"supports_prompt_caching": true,
"supports_reasoning": true,
"supports_tool_choice": true
},