gpt-daybreak-blue and gpt-daybreak-blue-latest suddenly unsupported with ChatGPT-authenticated Codex while gpt-5.6-sol still works
Open 💬 0 comments Opened Aug 19, 2026 by yaelahhdik
What version of Codex CLI is running?
codex-cli 0.148.0
What subscription do you have?
ChatGPT Pro
Which model were you using?
gpt-daybreak-blue-latest
What platform is your computer?
Microsoft Windows NT 10.0.26200.0 x64
What terminal emulator and version are you using (if applicable)?
Windows Terminal / PowerShell
Codex doctor report
{
"schemaVersion": 1,
"generatedAt": "1787125928s since unix epoch",
"overallStatus": "warning",
"codexVersion": "0.148.0",
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"summary": "background server is not running",
"details": {
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"daemon state dir": "C:\\Users\\<redacted-user>\\.codex\\app-server-daemon",
"mode": "ephemeral",
"pid file": "C:\\Users\\<redacted-user>\\.codex\\app-server-daemon\\app-server.pid (missing)",
"settings": "C:\\Users\\<redacted-user>\\.codex\\app-server-daemon\\settings.json (missing)",
"status": "not running",
"update-loop pid file": "C:\\Users\\<redacted-user>\\.codex\\app-server-daemon\\app-server-updater.pid (missing)"
},
"remediation": null,
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},
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"category": "auth",
"status": "ok",
"summary": "auth is configured",
"details": {
"auth file": "C:\\Users\\<redacted-user>\\.codex\\auth.json",
"auth storage mode": "File",
"stored API key": "false",
"stored ChatGPT tokens": "true",
"stored agent identity": "false",
"stored auth mode": "chatgpt"
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"config.toml parse": "ok",
"cwd": "C:\\Users\\<redacted-user>\\Documents\\<redacted-project>",
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"model": "gpt-5.6-sol",
"model provider": "openai",
"sqlite home": "C:\\Users\\<redacted-user>\\.codex"
},
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},
"git.environment": {
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"git exec path": "C:/Program Files/Git/mingw64/libexec/git-core",
"git version": "git version 2.51.1.windows.1",
"repo detected": "true",
"repo root": "C:\\Users\\<redacted-user>\\Documents\\<redacted-project>",
"selected git": "C:\\Program Files\\Git\\cmd\\git.exe"
},
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"git.worktree.dev_drive": {
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"category": "git",
"status": "warning",
"summary": "this worktree is not on a Windows Dev Drive; moving it to a trusted Dev Drive can significantly improve repository and filesystem performance",
"details": {},
"remediation": "create a trusted Windows Dev Drive for source repositories: https://learn.microsoft.com/en-us/<redacted>",
"durationMs": 1
},
"installation": {
"id": "installation",
"category": "install",
"status": "ok",
"summary": "installation looks consistent",
"details": {
"PATH codex #1": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\codex",
"PATH codex #2": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\codex.cmd",
"PATH codex entries": "2",
"current executable": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\bin\\codex.exe",
"install context": "npm (package C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc, bin C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\bin, resources C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\codex-resources, path C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\codex-path)",
"managed by bun": "false",
"managed by npm": "true",
"managed by pnpm": "false",
"managed package root": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex",
"npm update target": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex"
},
"remediation": null,
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"mcp.config": {
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"remediation": null,
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},
"network.env": {
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"status": "ok",
"summary": "network-related environment looks readable",
"details": {
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},
"network.provider_reachability": {
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"category": "reachability",
"status": "ok",
"summary": "active provider endpoints are reachable over HTTP",
"details": {
"ChatGPT base URL": "https://chatgpt.com/backend-api/ reachable (HTTP 403)",
"reachability mode": "ChatGPT auth"
},
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"durationMs": 214
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"network.websocket_reachability": {
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"category": "websocket",
"status": "ok",
"summary": "Responses WebSocket handshake succeeded",
"details": {
"DNS": "2 IPv4, 0 IPv6, first IPv4",
"auth mode": "chatgpt",
"connect timeout": "15000 ms",
"endpoint": "wss://chatgpt.com/backend-api/<redacted>",
"handshake result": "HTTP 101 Switching Protocols",
"model provider": "openai",
"provider name": "OpenAI",
"proxy env vars": "none",
"reasoning header": "false",
"server model present": "false",
"supports websockets": "true",
"wire API": "responses"
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},
"runtime.provenance": {
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"summary": "running npm on windows-x86_64",
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"current executable": "C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\bin\\codex.exe",
"install method": "npm (package C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc, bin C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\bin, resources C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\codex-resources, path C:\\Users\\<redacted-user>\\AppData\\Roaming\\npm\\node_modules\\@openai\\codex\\node_modules\\@openai\\codex-win32-x64\\vendor\\x86_64-pc-windows-msvc\\codex-path)",
"platform": "windows-x86_64",
"version": "0.148.0"
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"details": {
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"codex-linux-sandbox helper": "none",
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"filesystem sandbox": "restricted",
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"goals DB": "C:\\Users\\<redacted-user>\\.codex\\goals_1.sqlite (file)",
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"log DB": "C:\\Users\\<redacted-user>\\.codex\\logs_2.sqlite (file)",
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}
### What issue are you seeing?
Daybreak Blue suddenly stopped working in Codex when authenticated using my ChatGPT account.
The model was previously working normally with the same ChatGPT account, but it now returns HTTP 400.
When using:
codex -m gpt-daybreak-blue-latest
Codex first reports:
Model metadata for `gpt-daybreak-blue-latest` not found. Defaulting to fallback metadata; this can degrade performance and cause issues.
The request is then rejected with:
{"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'gpt-daybreak-blue-latest' model is not supported when using Codex with a ChatGPT account."}}
I also tested the stable Daybreak alias:
codex -m gpt-daybreak-blue
and received:
{"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'gpt-daybreak-blue' model is not supported when using Codex with a ChatGPT account."}}
However, gpt-5.6-sol continues to work normally using the exact same Codex installation and ChatGPT-authenticated session.
This appears to affect Daybreak-specific access rather than Codex authentication or GPT-5.6 Sol availability in general.
### What steps can reproduce the bug?
1. Authenticate Codex using a ChatGPT account that previously had working Daybreak access.
2. Run:
codex -m gpt-daybreak-blue-latest
3. Observe the metadata warning followed by HTTP 400:
The 'gpt-daybreak-blue-latest' model is not supported when using Codex with a ChatGPT account.
4. Run:
codex -m gpt-daybreak-blue
5. Observe the same HTTP 400 restriction for the stable Daybreak alias.
6. Run:
codex -m gpt-5.6-sol
7. Observe that gpt-5.6-sol works normally using the same ChatGPT account and Codex environment.
The Daybreak error began before I upgraded to Codex CLI 0.148.0. I upgraded afterward to see if the latest release would fix the issue, but the behavior remained unchanged.
### What is the expected behavior?
Daybreak Blue should continue to work through Codex using the same ChatGPT account and authentication method that previously had working Daybreak access.
If access requirements or entitlement behavior for Daybreak in ChatGPT-authenticated Codex have intentionally changed, Codex should provide a clear indication of that change.
Since gpt-5.6-sol still works normally, I would not expect only the Daybreak aliases to suddenly become unsupported.
### Additional information
This issue began before I upgraded Codex CLI to 0.148.0, so it does not appear to have been introduced specifically by 0.148.0.
Current results with the same ChatGPT-authenticated Codex session:
- gpt-5.6-sol: WORKS
- gpt-daybreak-blue: HTTP 400, unsupported with ChatGPT account
- gpt-daybreak-blue-latest: HTTP 400, unsupported with ChatGPT account
Daybreak Blue was working previously with this account.
The fact that both the stable Daybreak alias and the -latest alias fail, while gpt-5.6-sol continues working, makes this look like a Daybreak-specific entitlement, provisioning, or backend routing issue rather than a general authentication or CLI problem.
Possibly related issues:
- #37948
- #36082
- #32036
- #32680