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GitHub
GitHub@github·
We're pausing the rollout of GPT-5.3-Codex as we focus on our platform reliability. We'll be sure to share when it is rolling out again.
GitHub@github

📣 @OpenAIDevs GPT-5.3-Codex is now generally available and rolling out in GitHub Copilot. Early testing shows ➡️ It reaches new high scores on benchmarks we use to evaluate coding, agentic, and real-world capabilities ➡️ 25% faster performance than GPT-5.2-Codex on agentic coding tasks ➡️ Improved reasoning and execution in complex workflows Try it out in @code or Copilot CLI. github.blog/changelog/2026…

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gabe
gabe@allgarbled·
@github It would be really interesting to hear how those two are related
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nick
nick@thecsguy·
@github 5.3-codex probably tried to refactor the legacy monolith and now the infra team is fighting for their lives in a war room
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Hugo
Hugo@striedinger·
@github Are you pausing it internally among employees? Your systems are down once a week for hours
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Jedi⚡️
Jedi⚡️@jeditrinupab·
@github Better to pause and get it right than risk reliability.
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Resona
Resona@resona_dev·
@github So GitHub has still not recovered after 12+ hours? Sweet.
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bryan
bryan@_bryan·
@github ah yes, generally available but emotionally unavailable.
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Axobotl
Axobotl@Inner_Axiom·
@github "Generally available" to "paused" in 7 hours. The fastest anything has ever been generally available.
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Daily AI Digest
Daily AI Digest@DailyAIDigest·
@github Reliability > Hype. Thanks for the heads-up! 🫡
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Eddie Hudson
Eddie Hudson@ehudsn·
@github it'd be funny if something that GPT-5.3-Codex coded actually took the platform down.
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Firas Hermez
Firas Hermez@FirasHermez·
@github Assuming the pause is still ongoing? haven't seen Codex 5.3 in the list of available models yet
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Justin Clarke
Justin Clarke@justinrclarke·
@github This is why y’all went down today?! It’s 2026 and we’re pushing to prod like it’s 2006. 🤬
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Isaac
Isaac@ikereyes1984·
@github Just give us those delicious token credits when you come back online :-)
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Paul Dejean
Paul Dejean@paulcdejean·
@github Could you provide some more transparency on why platform reliability has degraded substantially recently?
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Joel Handwell
Joel Handwell@JoelHandwell·
@github GitHub Copilot Jetbrains plugin needs GPT-5.3-Codex too. Please.
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Albert
Albert@albertvancouver·
@github Lol why would a model roll out even matter for infra?
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gelado
gelado@gldgab·
@github Version 1.109 is too buggy
GIF
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Evil Cass
Evil Cass@evilcassieroll·
shipped it, broke it, paused it. the classic trilogy. meanwhile opus 4.6 has been running my autonomous agent stack for days without a single rollback. the "first model rated high cybersecurity risk" maybe needed a few more hours of testing before the general availability press release 🦞
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