feat(models): add GPT-5 Pro model definition

[steebchen]

Added definitions for the new GPT-5 Pro model, including pricing, provider details, and capabilities.

Summary by CodeRabbit

• New Features

  • Added a new “GPT‑5 Pro” model option with larger context and extended max output, streaming, advanced reasoning, vision input, tool use, and structured JSON responses.
  • Appears alongside existing models in selection menus where available.

• Chores

  • Updated model catalog and defaults, including pricing metadata for the new option.

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Walkthrough

Adds a new OpenAI model configuration entry with id gpt-5-pro to openaiModels, specifying provider, pricing, large context/output limits, and capability flags (streaming, reasoning, vision, tools, JSON output). No exported API signatures changed; the new provider lacks a test field.

Changes

Cohort / File(s)	Summary of changes
OpenAI models config packages/models/src/models/openai.ts	Added new model entry gpt-5-pro with provider { providerId: "openai", modelName: "gpt-5-pro" }, pricing (inputPrice: 15/1e6, outputPrice: 120/1e6, requestPrice: 0), contextSize: 400000, maxOutput: 272000, and capability flags: streaming: true, reasoning: true (reasoningOutput: "omit"), vision: true, tools: true, jsonOutput: true. No test field included.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• feat(models): add support for GPT-5 model family #590 — Adds other GPT‑5 family entries to the same packages/models/src/models/openai.ts.
• feat(models): add reasoning support to gpt-5 #599 — Adjusts reasoning flags for GPT‑5 variants in openai.ts.
• feat(models): add support for GPT OSS 120B and 20B #578 — Adds another model/provider entry to the same openaiModels registry.

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The pull request title "feat(models): add GPT-5 Pro model definition" directly and accurately describes the main change in the changeset. The title clearly indicates that a new GPT-5 Pro model definition is being added to the models module, which aligns with both the file-level changes (adding a new model entry to openaiModels) and the stated PR objectives. The title is concise, specific, and avoids vague terminology, making it immediately clear to a reviewer what the primary purpose of the change is.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/modelsgpt5

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• packages/models/src/models/openai.ts (1 hunks)

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• packages/models/src/models/openai.ts

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Actionable comments posted: 3

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 99a0145 and f01324a.

📒 Files selected for processing (1)

• packages/models/src/models/openai.ts (1 hunks)

🧰 Additional context used

📓 Path-based instructions (2)

**/*.{ts,tsx}

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**/*.{ts,tsx}: This is a pure TypeScript project—do not use any or as any unless absolutely necessary
Always use top-level ES imports; never use require or dynamic import()

Files:

• packages/models/src/models/openai.ts

**/*.{ts,tsx,js,jsx}

📄 CodeRabbit inference engine (AGENTS.md)

Always use top-level import; never use require() or dynamic import()

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• packages/models/src/models/openai.ts

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🔇 Additional comments (2)

packages/models/src/models/openai.ts (2)

577-593: Verify whether a second provider should be added.

Other GPT-5 family models (gpt-5, gpt-5-mini, gpt-5-nano) have two providers: "openai" and "routeway-discount". This model only has one provider. Please confirm whether this is intentional or if the "routeway-discount" provider should be added for consistency.

If a second provider should be added, refer to the pattern used in gpt-5 (lines 397-421) for the structure.

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571-595: Validate GPT-5 Pro pricing and capacity

• Pricing matches official API: $15 / 1M input, $120 / 1M output
• ContextSize 400 000 and maxOutput 272 000 tokens aren’t documented publicly—please confirm in the official model spec docs.

[steebchen]

superseded by #1154