"Codex ran out of room in the model's context window. Start a new thread or clear earlier history before retrying." error while /goal is in progress

What version of Codex CLI is running?

0.133.0

What subscription do you have?

API Billing

Which model were you using?

gpt-5.5

What platform is your computer?

Darwin 25.5.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

Warp v0.2026.05.18.05.32.stable_02

Codex doctor report

{
  "schemaVersion": 1,
  "generatedAt": "1779504338s since unix epoch",
  "overallStatus": "ok",
  "codexVersion": "0.133.0",
  "checks": {
    "app_server.status": {
      "id": "app_server.status",
      "category": "app-server",
      "status": "ok",
      "summary": "background server is not running",
      "details": {
        "control socket": "/Users/mruhf/.codex/app-server-control/app-server-control.sock",
        "daemon state dir": "/Users/mruhf/.codex/app-server-daemon",
        "mode": "ephemeral",
        "pid file": "/Users/mruhf/.codex/app-server-daemon/app-server.pid (missing)",
        "settings": "/Users/mruhf/.codex/app-server-daemon/settings.json (missing)",
        "status": "not running",
        "update-loop pid file": "/Users/mruhf/.codex/app-server-daemon/app-server-updater.pid (missing)"
      },
      "remediation": null,
      "durationMs": 0
    },
    "auth.credentials": {
      "id": "auth.credentials",
      "category": "auth",
      "status": "ok",
      "summary": "OpenAI auth is not required for the active model provider",
      "details": {
        "auth file": "/Users/mruhf/.codex/auth.json",
        "auth storage mode": "File",
        "model provider requires OpenAI auth": "false"
      },
      "remediation": null,
      "durationMs": 0
    },
    "config.load": {
      "id": "config.load",
      "category": "config",
      "status": "ok",
      "summary": "config loaded",
      "details": {
        "CODEX_HOME": "/Users/mruhf/.codex",
        "config.toml": "/Users/mruhf/.codex/config.toml",
        "config.toml parse": "ok",
        "cwd": "/Users/mruhf/RepairPal/Repairpal-Rails.admin-typescript",
        "enabled feature flags": "shell_tool, unified_exec, shell_snapshot, terminal_resize_reflow, sqlite, memories, hooks, enable_request_compression, multi_agent, apps, tool_suggest, plugins, plugin_hooks, in_app_browser, browser_use, browser_use_external, computer_use, plugin_sharing, image_generation, skill_mcp_dependency_install, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, personality, fast_mode, tui_app_server, prevent_idle_sleep, workspace_dependencies",
        "feature flag overrides": "memories=true, prevent_idle_sleep=true",
        "feature flags enabled": "30",
        "log dir": "/Users/mruhf/.codex/log",
        "mcp servers": "10",
        "model": "gpt-5.5",
        "model provider": "<company>",
        "sqlite home": "/Users/mruhf/.codex"
      },
      "remediation": null,
      "durationMs": 0
    },
    "installation": {
      "id": "installation",
      "category": "install",
      "status": "ok",
      "summary": "installation looks consistent",
      "details": {
        "PATH codex #1": "/Users/mruhf/.bun/bin/codex",
        "current executable": "/Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/bin/codex",
        "install context": "bun (package /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin, bin /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/bin, resources none, path /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/codex-path)",
        "managed by bun": "true",
        "managed by npm": "false",
        "managed package root": "/Users/mruhf/.bun/install/global/node_modules/@openai/codex"
      },
      "remediation": null,
      "durationMs": 5
    },
    "mcp.config": {
      "id": "mcp.config",
      "category": "mcp",
      "status": "ok",
      "summary": "MCP configuration is locally consistent",
      "details": {
        "configured servers": "10",
        "disabled servers": "0",
        "stdio servers": "7",
        "streamable_http servers": "3"
      },
      "remediation": null,
      "durationMs": 1638
    },
    "network.env": {
      "id": "network.env",
      "category": "network",
      "status": "ok",
      "summary": "network-related environment looks readable",
      "details": {
        "proxy env vars": "none"
      },
      "remediation": null,
      "durationMs": 0
    },
    "network.provider_reachability": {
      "id": "network.provider_reachability",
      "category": "reachability",
      "status": "ok",
      "summary": "active provider endpoints are reachable over HTTP",
      "details": {
        "reachability mode": "provider auth",
        "<company> API base URL": "<internal gateway> reachable (HTTP 200)",
        "<company> API route probe": "<internal gateway>/models route exists (HTTP 401)"
      },
      "remediation": null,
      "durationMs": 1559
    },
    "network.websocket_reachability": {
      "id": "network.websocket_reachability",
      "category": "websocket",
      "status": "ok",
      "summary": "Responses WebSocket is not enabled for the active provider",
      "details": {
        "model provider": "<company>",
        "provider name": "<Company>",
        "proxy env vars": "none",
        "supports websockets": "false",
        "wire API": "responses"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.provenance": {
      "id": "runtime.provenance",
      "category": "runtime",
      "status": "ok",
      "summary": "running bun on macos-aarch64",
      "details": {
        "commit": "unknown",
        "current executable": "/Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/bin/codex",
        "install method": "bun (package /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin, bin /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/bin, resources none, path /Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/codex-path)",
        "platform": "macos-aarch64",
        "version": "0.133.0"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.search": {
      "id": "runtime.search",
      "category": "search",
      "status": "ok",
      "summary": "search is OK (bundled)",
      "details": {
        "search command": "/Users/mruhf/.bun/install/global/node_modules/@openai/codex-darwin-arm64/vendor/aarch64-apple-darwin/codex-path/rg",
        "search command readiness": "file exists",
        "search provider": "bundled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "sandbox.helpers": {
      "id": "sandbox.helpers",
      "category": "sandbox",
      "status": "ok",
      "summary": "sandbox configuration is readable",
      "details": {
        "approval policy": "OnRequest",
        "codex-linux-sandbox helper": "none",
        "execve wrapper helper": "/Users/mruhf/.codex/tmp/arg0/codex-arg0xUma3E/codex-execve-wrapper",
        "filesystem sandbox": "restricted",
        "network sandbox": "enabled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "state.paths": {
      "id": "state.paths",
      "category": "state",
      "status": "ok",
      "summary": "state paths and databases are inspectable",
      "details": {
        "CODEX_HOME": "/Users/mruhf/.codex (dir)",
        "active rollout files": "5369 files, 2154783956 total bytes, 401338 average bytes",
        "archived rollout files": "140 files, 121378199 total bytes, 866987 average bytes",
        "goals DB": "/Users/mruhf/.codex/goals_1.sqlite (file)",
        "goals DB integrity": "ok",
        "log DB": "/Users/mruhf/.codex/logs_2.sqlite (file)",
        "log DB integrity": "ok",
        "log dir": "/Users/mruhf/.codex/log (dir)",
        "sqlite home": "/Users/mruhf/.codex (dir)",
        "state DB": "/Users/mruhf/.codex/state_5.sqlite (file)",
        "state DB integrity": "ok"
      },
      "remediation": null,
      "durationMs": 23218
    },
    "terminal.env": {
      "id": "terminal.env",
      "category": "terminal",
      "status": "ok",
      "summary": "terminal metadata was detected",
      "details": {
        "COLORTERM": "truecolor",
        "TERM_PROGRAM": "WarpTerminal",
        "color output": "enabled",
        "effective locale": "en_US.UTF-8",
        "stderr is terminal": "true",
        "stdin is terminal": "true",
        "stdout is terminal": "true",
        "terminal": "Warp",
        "terminal size": "281x64",
        "terminal version": "v0.2026.05.18.05.32.stable_02"
      },
      "remediation": null,
      "durationMs": 0
    },
    "updates.status": {
      "id": "updates.status",
      "category": "updates",
      "status": "ok",
      "summary": "update configuration is locally consistent",
      "details": {
        "cached latest version": "0.133.0",
        "check for update on startup": "true",
        "last checked at": "2026-05-22T16:51:34.398796Z",
        "latest version": "0.133.0",
        "latest version status": "current version is not older",
        "update action": "bun install -g @openai/codex",
        "version cache": "/Users/mruhf/.codex/version.json"
      },
      "remediation": null,
      "durationMs": 193
    }
  }
}

What issue are you seeing?

After several hours of /goal usage, the following error message appears repeatedly, until the conversation is interrupted:

Codex ran out of room in the model's context window. Start a new thread or clear earlier history before retrying.

What steps can reproduce the bug?

Uploaded thread: 019e5173-d297-7ae1-84ac-828e9823498d

What is the expected behavior?

I would normally expect automatic compaction to work as expected during /goal execution.

Additional information

_No response_