{ "model_name": "Grok 4.5", "model_organization": "xAI", "submitting_organization": "Sierra", "submission_date": "2026-08-04", "submission_type": "standard", "modality": "text", "contact_info": { "email": "ben.s@sierra.ai", "name": "Sierra Research Team" }, "results": { "airline": null, "retail": null, "telecom": null, "banking_knowledge": { "pass_1": 47.93814432989691, "pass_2": 39.51890034364261, "pass_3": 35.30927835051546, "pass_4": 31.958762886597935, "cost": null, "retrieval_config": "alltools" } }, "is_new": true, "trajectories_available": true, "trajectory_files": { "banking_knowledge": "banking_knowledge_results.json" }, "references": [], "reasoning_effort": "high", "methodology": { "evaluation_date": "2026-07-24", "tau2_bench_version": "1.0.1", "user_simulator": "gpt-5.2", "notes": "Banking_knowledge evaluation with AllTools retrieval, GPT-5.2 low-reasoning user simulation, four trials, and seed 300.", "verification": { "modified_prompts": false, "omitted_questions": false } }, "model_release": { "release_date": "2026-07-16", "announcement_url": "https://x.ai/news/grok-4-5", "announcement_title": "Introducing Grok 4.5" } }