{
  "benchmark": "tau2-bench",
  "operator": "Codex acting as the human operator",
  "source_commit": "8d005b0e5b9e4af0bc055886fa7f95fc86d1710e",
  "user_simulator": "Qwen/Qwen2.5-3B-Instruct, cached locally and run on CPU",
  "compatibility_boundary": "No valid hosted-model credential was available: the OpenAI credential was absent and the available Anthropic credential returned HTTP 401. The benchmark support-agent side remained manually operated by Codex, while the standard hidden user role was generated by the locally cached Qwen model. Clear terminal farewells were normalized to ###STOP###. The model's repeated role inversion materially affected the hard episode.",
  "raw_transcript_policy": "The exact benchmark transcripts are retained beside this summary as easy-transcript.json, medium-transcript.json, and hard-transcript.json. operator_trajectory is a readable condensation; the transcripts preserve every assistant turn, user turn, tool call, tool result, and evaluator payload.",
  "cases": [
    {
      "tier": "easy",
      "task_id": "[mobile_data_issue]data_mode_off|data_usage_exceeded[PERSONA:None]",
      "seed": 62021,
      "about": "Restore mobile data when it is disabled and the line has exhausted its data allowance, obtaining explicit consent before a paid refuel.",
      "operator_trajectory": [
        "Greeted the customer and looked up phone 555-123-2002 with get_customer_by_phone.",
        "Inspected L1001 and L1002 with get_details_by_id and identified L1002 as the affected line.",
        "Asked the user to run check_network_status; the result showed mobile data disabled.",
        "Asked the user to toggle mobile data on and run a speed test; the test still failed.",
        "Called get_data_usage for C1001/L1002 and found 15.1 GB used against a 15.0 GB limit.",
        "Looked up plan P1002 and found refueling cost $2 per GB.",
        "Offered up to 2 GB, then explicitly confirmed that 2 GB would cost $4 before charging.",
        "After consent, called refuel_data for 2.0 GB on C1001/L1002.",
        "Asked for a final speed test and observed 275 Mbps (Excellent).",
        "Summarized the restored service and $4 charge, said farewell, and requested the terminal ###STOP### marker."
      ],
      "observed_state": {
        "mobile_data_enabled": true,
        "data_refueling_gb": 2.0,
        "charge_usd": 4.0,
        "final_speed_mbps": 275.0,
        "final_speed_description": "Excellent"
      },
      "termination_reason": "user_stop",
      "official_reward": 1.0,
      "result": "passed",
      "evaluation_explanation": "The official environment assertions found mobile data enabled, the required 2 GB refuel applied after confirmation, and a final Excellent connection."
    },
    {
      "tier": "medium",
      "task_id": "[mobile_data_issue]bad_vpn|data_saver_mode_on|user_abroad_roaming_disabled_on[PERSONA:None]",
      "seed": 62022,
      "about": "Diagnose slow mobile data abroad and repair carrier roaming, Data Saver, and a degraded VPN without making unsupported changes.",
      "operator_trajectory": [
        "Greeted the customer and looked up phone 555-123-2002 with get_customer_by_phone.",
        "Mistakenly called nonexistent get_line_by_id for L1001; preserved the tool error and recovered with get_details_by_id.",
        "Inspected L1001 and L1002 and identified L1002 as the affected line.",
        "Asked for a speed test and full network status, then confirmed that the customer was abroad before changing roaming.",
        "Called enable_roaming for C1001/L1002 because phone-side roaming was on but carrier-side roaming was off.",
        "Asked for another speed test, then followed the slow-data workflow by requesting check_data_restriction_status.",
        "Asked the user to toggle Data Saver off and retest.",
        "Requested check_vpn_status before making a VPN change; it confirmed an active degraded OpenVPN connection.",
        "Asked the user to disconnect the VPN and run a final speed test.",
        "Observed 275 Mbps (Excellent) and summarized all three repairs."
      ],
      "observed_state": {
        "line_id": "L1002",
        "carrier_roaming_enabled": true,
        "data_saver_enabled": false,
        "degraded_vpn_connected": false,
        "final_speed_mbps": 275.0,
        "final_speed_description": "Excellent"
      },
      "official_action_checks": {
        "disconnect_vpn": true,
        "toggle_data_saver_mode": true,
        "enable_roaming": true
      },
      "termination_reason": "user_stop",
      "official_reward": 1.0,
      "result": "passed",
      "evaluation_explanation": "All three official action checks passed and the final environment assertion reported 275 Mbps (Excellent). The invalid early tool name did not alter state and the operator recovered correctly."
    },
    {
      "tier": "hard",
      "task_id": "[mms_issue]airplane_mode_on|bad_network_preference|bad_wifi_calling|break_apn_mms_setting|break_app_sms_permission|data_mode_off|data_usage_exceeded|unseat_sim_card|user_abroad_roaming_disabled_on[PERSONA:None]",
      "seed": 62023,
      "about": "Repair a nine-fault MMS outage spanning airplane mode, SIM seating, roaming, mobile data and allowance, preferred network, Wi-Fi Calling, app permission, and MMS APN state.",
      "operator_trajectory": [
        "Asked for the affected number, looked up 555-123-2002, inspected L1002, and established that MMS could not be sent.",
        "Requested status-bar inspection, identified airplane mode, and directed the user to turn it off.",
        "Requested SIM diagnostics, identified an unseated SIM, and directed the user to reseat it and verify active status.",
        "Requested network status and called enable_roaming for C1001/L1002 because carrier-side roaming was disabled.",
        "Directed the user to enable mobile data and run a speed test; the test had no connection.",
        "Called get_data_usage and get_details_by_id for plan P1002; found 15.1/15.0 GB usage and a $2/GB refuel price.",
        "Offered up to 2 GB, confirmed the exact $4 total, and after consent called refuel_data for 2 GB.",
        "Requested another speed test; connectivity returned at 0.05 Mbps, then confirmed MMS still failed.",
        "Identified the 2G preference and repeatedly corrected the local user simulator's role inversion until it executed set_network_mode_preference with mode 4g_5g_preferred.",
        "Retested MMS, checked Wi-Fi Calling, directed the user to disable it, and retested MMS again.",
        "Checked messaging app permissions, identified missing SMS permission, and directed grant_app_permission for messaging/sms followed by an MMS test and APN check.",
        "Identified that the MMSC URL was Not Set and directed reset_apn_settings, reboot_device, can_send_mms, and run_speed_test in one ordered response.",
        "Observed that MMS succeeded and the speed was 275 Mbps (Excellent), then gave a final success summary."
      ],
      "observed_state": {
        "airplane_mode": false,
        "sim_status": "active",
        "carrier_roaming_enabled": true,
        "mobile_data_enabled": true,
        "data_refueling_gb": 2.0,
        "charge_usd": 4.0,
        "network_mode": "4g_5g_preferred",
        "wifi_calling_enabled": false,
        "messaging_sms_permission": true,
        "apn_reset_and_rebooted": true,
        "can_send_mms": true,
        "final_speed_mbps": 275.0,
        "final_speed_description": "Excellent"
      },
      "termination_reason": "max_steps",
      "official_reward": 0.0,
      "result": "failed",
      "evaluation_explanation": "The terminal device state was repaired, but the benchmark episode did not receive its required terminal stop before the 100-step cap. The local Qwen user simulator repeatedly inverted roles and asked the support agent to execute phone-side tools, consuming the step budget. The official evaluator therefore returned 0.0 for premature termination; no rerun was made."
    }
  ]
}