{"data":{"id":"xai-grok-4-fast","name":"grok-4-fast","display_name":"Grok 4 Fast","description":"A cost-efficient multimodal LLM from xAI with a 2M token context window, available in both reasoning and non-reasoning flavors.","creator":"xai","family":"grok","tier":"","version":"4","type":"language","size_in_bn":null,"modalities":{"input":["image","text"],"output":["text"]},"context_window":131072,"max_output_tokens":30000,"tool_use_system_prompt_tokens":0,"output_vector_sizes":[],"knowledge_cutoff":"2025-09-30","training_data_cutoff":null,"supported_reasoning_efforts":["default"],"tokenizer":"Grok","capabilities":{"function_calling":true,"parallel_function_calling":false,"structured_outputs":true,"prompt_caching":false,"reasoning":true,"web_search":false,"computer_use":false,"code_execution":false,"file_search":false,"url_context":false,"assistant_prefill":false,"native_structured_output":true,"adaptive_reasoning":false},"release_date":"2025-09-19","earliest_deprecation_date":"2026-05-15","deprecated":true,"has_pricing":true,"provider_count":3,"ids":["grok-4-fast","oci/xai.grok-4-fast","x-ai/grok-4-fast","xai-grok-4-fast"],"hf_likes":null,"hf_downloads":null,"hf_downloads_all_time":null,"hf_trending_score":null,"updated_at":"2026-06-19 08:02:10"},"meta":{"updated_at":"2026-06-19","request_id":"0eab0388-b90a-4d35-898b-b825bec06f9a","execution_ms":40}}