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[FEATURE]: Azure GPT-5.3 Codex Model Support #15063
Description
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
Support integrating Azure's GPT-5.3 Codex model for code generation and real-time AI experiences, as announced here: https://techcommunity.microsoft.com/blog/azure-ai-foundry-blog/new-azure-open-ai-models-bring-fast-expressive-and-real%E2%80%91time-ai-experiences-in-m/4496184
This enhancement would allow users to utilize the latest Azure OpenAI models for improved speed, expressiveness, and real-time code capabilities. Adapting opencode to support GPT-5.3 Codex can enable:
- Enhanced code generation and completion features
- Access to advanced real-time AI functionalities from Azure
- Expand compatibility for enterprise and cloud-based AI workflows
Please assess model API compatibility and provide configuration/adaptation options for Azure deployments.
Reacted by Aviv Haddad, Stefan, Luke Ledet, Andrew Qiu, Alexandre Reyes Martins, Xabi, Noah K. Tilton, Thomas Meckel and Justin Hnatow
Activity
OpenCodeEngineer commentedon Mar 30, 2026
A concrete fix is available in
dzianisv/opencode#107with head commit5e58aab75.The change backfills
azure/gpt-5.3-codexin the core provider normalization path so it still shows up when the localmodels.devpayload is behind the latest Azure catalog, and it adds regression coverage for the stale-metadata case.This was verified with:
bun test test/provider/provider.test.ts test/provider/transform.test.tsbun run typecheckOPENCODE_MODELS_PATH=/Users/engineer/workspace/opencode/packages/opencode/test/tool/fixtures/models-api.json AZURE_RESOURCE_NAME=test-resource AZURE_API_KEY=test-api-key bun run --cwd packages/opencode --conditions=browser src/index.ts models azure | rg '^azure/gpt-5\\.3-codex$'