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Add GPT-5.4 and GPT-5.5 model support #126

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77226d2
Add GPT-5.4 and GPT-5.5 model support
Mindrocket42 Jul 6, 2026
89cb57b
Fix GPT-5.4/5.5 Codex presets to send the plain model name on the wire
Mindrocket42 Jul 6, 2026
2de58a0
Correct README/CHANGELOG wording on GPT-5.4/5.5 Codex presets
Mindrocket42 Jul 6, 2026
892515f
Reformat GPT-5.4/5.5 changelog entry as a table
Mindrocket42 Jul 6, 2026
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19 changes: 19 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -2,6 +2,25 @@

All notable changes to this project are documented here. Dates use the ISO format (YYYY-MM-DD).

## [4.5.0] - 2026-07-06

**Model release**: GPT-5.4 and GPT-5.5 support.

### Added

| Preset | Context | Output | Chat reasoning | Codex reasoning | Same backend model as chat? |
|---|---|---|---|---|---|
| GPT-5.5 | 1.05M | 128K | none/low/medium/high/xhigh | low/medium/high/xhigh | **Yes** — no separate `-codex` deployment |
| GPT-5.4 | 1.05M | 128K | none/low/medium/high/xhigh | low/medium/high/xhigh | **Yes** — no separate `-codex` deployment |
| GPT-5.4 Mini | 400K | 128K | none/low/medium/high/xhigh | — | n/a (chat-only, defaults to `low`) |
| GPT-5.4 Nano | 400K | 128K | none/low/medium/high/xhigh | — | n/a (chat-only, defaults to `low`) |

Confirmed via testing: GPT-5.4/5.5, unlike GPT-5.1/5.2, have no distinct `-codex` backend deployment. The OA-chat/OA-codex split is purely which system prompt and reasoning defaults the plugin applies — same underlying model either way.

### Changed
- `getReasoningConfig` now derives `xhigh`/`none` support from the GPT-5.x point-release number, not a hardcoded flag per version — future point releases with the same schema need only new `MODEL_MAP`/config entries.
- New `resolveWireModel()` in `model-map.ts` sends the real model name (`gpt-5.4`/`gpt-5.5`) on the wire for the OA-codex presets, instead of the rejected `gpt-5.4-codex`/`gpt-5.5-codex` strings.

## [4.4.0] - 2026-01-09

**Maintenance release**: OAuth success page version sync.
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8 changes: 7 additions & 1 deletion README.md
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Expand Up @@ -43,6 +43,12 @@ npx -y opencode-openai-codex-auth@latest --uninstall --all
```
---
## 📦 Models
- **gpt-5.5 (OA-chat)** (none/low/medium/high/xhigh)
- **gpt-5.5 (OA-codex)** (low/medium/high/xhigh) — same backend model as OA-chat, no separate `-codex` deployment
- **gpt-5.4 (OA-chat)** (none/low/medium/high/xhigh)
- **gpt-5.4 (OA-codex)** (low/medium/high/xhigh) — same backend model as OA-chat, no separate `-codex` deployment
- **gpt-5.4-mini** (none/low/medium/high/xhigh)
- **gpt-5.4-nano** (none/low/medium/high/xhigh)
- **gpt-5.2** (none/low/medium/high/xhigh)
- **gpt-5.2-codex** (low/medium/high/xhigh)
- **gpt-5.1-codex-max** (low/medium/high/xhigh)
Expand All @@ -58,7 +64,7 @@ Minimal configs are not supported for GPT‑5.x; use the full configs above.
---
## ✅ Features
- ChatGPT Plus/Pro OAuth authentication (official flow)
- 22 model presets across GPT‑5.2 / GPT‑5.2 Codex / GPT‑5.1 families
- 50 model presets across GPT‑5.5 / GPT‑5.4 / GPT‑5.2 / GPT‑5.1 families
- Variant system support (v1.0.210+) + legacy presets
- Multimodal input enabled for all models
- Usage‑aware errors + automatic token refresh
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336 changes: 336 additions & 0 deletions config/opencode-legacy.json
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Expand Up @@ -15,6 +15,342 @@
"store": false
},
"models": {
"gpt-5.5-none": {
"name": "GPT 5.5 None (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "none",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-low": {
"name": "GPT 5.5 Low (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-medium": {
"name": "GPT 5.5 Medium (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-high": {
"name": "GPT 5.5 High (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-xhigh": {
"name": "GPT 5.5 Extra High (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-codex-low": {
"name": "GPT 5.5 Low (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-codex-medium": {
"name": "GPT 5.5 Medium (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-codex-high": {
"name": "GPT 5.5 High (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.5-codex-xhigh": {
"name": "GPT 5.5 Extra High (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-none": {
"name": "GPT 5.4 None (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "none",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-low": {
"name": "GPT 5.4 Low (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-medium": {
"name": "GPT 5.4 Medium (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-high": {
"name": "GPT 5.4 High (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-xhigh": {
"name": "GPT 5.4 Extra High (OA-chat)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-codex-low": {
"name": "GPT 5.4 Low (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-codex-medium": {
"name": "GPT 5.4 Medium (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-codex-high": {
"name": "GPT 5.4 High (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-codex-xhigh": {
"name": "GPT 5.4 Extra High (OA-codex)",
"limit": { "context": 1050000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-mini-none": {
"name": "GPT 5.4 Mini None (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "none",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-mini-low": {
"name": "GPT 5.4 Mini Low (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-mini-medium": {
"name": "GPT 5.4 Mini Medium (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-mini-high": {
"name": "GPT 5.4 Mini High (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-mini-xhigh": {
"name": "GPT 5.4 Mini Extra High (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-nano-none": {
"name": "GPT 5.4 Nano None (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "none",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-nano-low": {
"name": "GPT 5.4 Nano Low (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "low",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-nano-medium": {
"name": "GPT 5.4 Nano Medium (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "medium",
"reasoningSummary": "auto",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-nano-high": {
"name": "GPT 5.4 Nano High (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "high",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.4-nano-xhigh": {
"name": "GPT 5.4 Nano Extra High (OA-chat)",
"limit": { "context": 400000, "output": 128000 },
"modalities": { "input": ["text", "image"], "output": ["text"] },
"options": {
"reasoningEffort": "xhigh",
"reasoningSummary": "detailed",
"textVerbosity": "medium",
"include": ["reasoning.encrypted_content"],
"store": false
}
},
"gpt-5.2-none": {
"name": "GPT 5.2 None (OAuth)",
"limit": {
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