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[FEATURE]: 5.3 Codex for Github Copilot provider #8972

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opened 2026-02-16 18:11:17 -05:00 by yindo · 11 comments
yindo commented 2026-02-16 18:11:17 -05:00
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Originally created by @wishiweresaitama on GitHub (Feb 10, 2026).

Originally assigned to: @thdxr on GitHub.

Feature hasn't been suggested before.

  • I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Newest Codex 5.3 model is officially supported by GitHub Copilot provider

Please, add it to OpenCode. Thanks in advance!

Originally created by @wishiweresaitama on GitHub (Feb 10, 2026). Originally assigned to: @thdxr on GitHub. ### Feature hasn't been suggested before. - [x] I have verified this feature I'm about to request hasn't been suggested before. ### Describe the enhancement you want to request Newest Codex 5.3 model is [officially supported](https://github.blog/changelog/2026-02-09-gpt-5-3-codex-is-now-generally-available-for-github-copilot/) by GitHub Copilot provider Please, add it to OpenCode. Thanks in advance!
yindo added the discussion label 2026-02-16 18:11:17 -05:00
yindo commented 2026-02-16 18:11:17 -05:00
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@mykgrv commented on GitHub (Feb 11, 2026):

+1, Especially when 5.3 codex has a 1x multiplier and Opus 4.6/4.5 have 3x request multiplier.

@mykgrv commented on GitHub (Feb 11, 2026): +1, Especially when 5.3 codex has a 1x multiplier and Opus 4.6/4.5 have 3x request multiplier.
yindo commented 2026-02-16 18:11:17 -05:00
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@fabianszabo commented on GitHub (Feb 13, 2026):

Funny, it showed up but never worked. Now it doesn't even show up 👀 I did activate the model in my organisation. Would love to use it instead of 5.2-Codex 🙏🏼

@fabianszabo commented on GitHub (Feb 13, 2026): Funny, it showed up but never worked. Now it doesn't even show up 👀 I did activate the model in my organisation. Would love to use it instead of 5.2-Codex 🙏🏼
yindo commented 2026-02-16 18:11:17 -05:00
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@julianperezpesce commented on GitHub (Feb 13, 2026):

Will be added to Zen Models? What about MiniMax 2.5 or GLM 5?

@julianperezpesce commented on GitHub (Feb 13, 2026): Will be added to Zen Models? What about MiniMax 2.5 or GLM 5?
yindo commented 2026-02-16 18:11:17 -05:00
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@sahilchouksey commented on GitHub (Feb 13, 2026):

Hey everyone!

I've submitted a fix for this: #13485
Enables GPT 5.3 Codex with GitHub Copilot

Image

opencode.json:

{
  "plugin": ["opencode-copilot-auth@latest"],
  "provider": {
    "github-copilot": {
      "models": {
        "gpt-5.3-codex": {
            "modalities": {
              "input": ["text", "image"],
              "output": ["text"]
            }
        }
      }
    }
  }
}
@sahilchouksey commented on GitHub (Feb 13, 2026): Hey everyone! I've submitted a fix for this: #13485 Enables GPT 5.3 Codex with GitHub Copilot <img width="1546" height="422" alt="Image" src="https://github.com/user-attachments/assets/f2e5b95b-5b59-45d8-9577-2e26654157b7" /> > > `opencode.json`: > ```json > { > "plugin": ["opencode-copilot-auth@latest"], > "provider": { > "github-copilot": { > "models": { > "gpt-5.3-codex": { > "modalities": { > "input": ["text", "image"], > "output": ["text"] > } > } > } > } > } > } > ```
yindo commented 2026-02-16 18:11:17 -05:00
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@sarisia commented on GitHub (Feb 13, 2026):

Is it safe (not bannable) to use opencode-copilot-auth plugin? It seems to mimic VSCode and calls copilot's private apis...

@sarisia commented on GitHub (Feb 13, 2026): Is it safe (not bannable) to use opencode-copilot-auth plugin? It seems to mimic VSCode and calls copilot's private apis...
yindo commented 2026-02-16 18:11:17 -05:00
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@sahilchouksey commented on GitHub (Feb 14, 2026):

I'm not sure but opencode explicitly blocks opencode-copilot-auth in the code, so there's probably a reason

@sahilchouksey commented on GitHub (Feb 14, 2026): I'm not sure but opencode explicitly blocks `opencode-copilot-auth` in the code, so there's probably a reason
yindo commented 2026-02-16 18:11:17 -05:00
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@JReis23 commented on GitHub (Feb 14, 2026):

Anyone knows exactly why this is taking so long to access this model? Normally the access to new models are implemented faster.

@JReis23 commented on GitHub (Feb 14, 2026): Anyone knows exactly why this is taking so long to access this model? Normally the access to new models are implemented faster.
yindo commented 2026-02-16 18:11:17 -05:00
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@wishiweresaitama commented on GitHub (Feb 14, 2026):

I believe it's because of Microsoft shit the bed with the model's initial release🤷‍♂️

@wishiweresaitama commented on GitHub (Feb 14, 2026): I believe it's because of Microsoft shit the bed with the model's initial release🤷‍♂️
yindo commented 2026-02-16 18:11:17 -05:00
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@dp-sii-germany commented on GitHub (Feb 16, 2026):

{
  "plugin": ["opencode-copilot-auth@latest"],
  "provider": {
    "github-copilot": {
      "models": {
        "gpt-5.3-codex": {
            "modalities": {
              "input": ["text", "image"],
              "output": ["text"]
            }
        }
      }
    }
  }
}

This doesn't work for me. I am getting model not supported error.

@dp-sii-germany commented on GitHub (Feb 16, 2026): ``` { "plugin": ["opencode-copilot-auth@latest"], "provider": { "github-copilot": { "models": { "gpt-5.3-codex": { "modalities": { "input": ["text", "image"], "output": ["text"] } } } } } } ``` This doesn't work for me. I am getting model not supported error.
yindo commented 2026-02-16 18:11:18 -05:00
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@antonio-ivanovski commented on GitHub (Feb 16, 2026):

Hey everyone!

I've submitted a fix for this: #13485 Enables GPT 5.3 Codex with GitHub Copilot

Think this is the way to go, ping @thdxr

@antonio-ivanovski commented on GitHub (Feb 16, 2026): > Hey everyone! > > I've submitted a fix for this: [#13485](https://github.com/anomalyco/opencode/pull/13485) Enables GPT 5.3 Codex with GitHub Copilot Think this is the way to go, ping @thdxr
yindo commented 2026-02-16 18:11:18 -05:00
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@sahilchouksey commented on GitHub (Feb 16, 2026):

{
  "plugin": ["opencode-copilot-auth@latest"],
  "provider": {
    "github-copilot": {
      "models": {
        "gpt-5.3-codex": {
            "modalities": {
              "input": ["text", "image"],
              "output": ["text"]
            }
        }
      }
    }
  }
}

This doesn't work for me. I am getting model not supported error.

have you applied the changes from the PR?

@sahilchouksey commented on GitHub (Feb 16, 2026): > ``` > { > "plugin": ["opencode-copilot-auth@latest"], > "provider": { > "github-copilot": { > "models": { > "gpt-5.3-codex": { > "modalities": { > "input": ["text", "image"], > "output": ["text"] > } > } > } > } > } > } > ``` > > This doesn't work for me. I am getting model not supported error. have you applied the changes from the PR?
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Reference: anomalyco/opencode#8972
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