feat(models): add novita provider for glm-5.1

[steebchen]

Summary

• Add Novita as a provider for GLM-5.1 (zai-org/glm-5.1) with 204.8K context and 131.1K max output.
• Pricing matches Novita's listing: $1.40/M input, $0.26/M cached input, $4.40/M output.

Test plan

• TEST_MODELS="novita/glm-5.1" pnpm test:e2e — all 72 tests pass (including reasoning, streaming, tool calls, JSON output).

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Added support for the GLM-5.1 model with streaming, reasoning capabilities, tool use, and JSON output. The model provides a 204,800 token context window and supports a maximum output of 131,100 tokens.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 9ecc6ee8-7192-49e9-b076-814d0bbb3921

📥 Commits

Reviewing files that changed from the base of the PR and between 123483b and 7839fcf.

📒 Files selected for processing (1)

• packages/models/src/models/zai.ts

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Walkthrough

A new provider entry for the glm-5.1 model is added to zaiModels.providers with Novita as the provider, including pricing tiers, capability flags (streaming, reasoning, tools, JSON output enabled), and context/output capacity specifications.

Changes

Cohort / File(s)	Summary
Model Provider Configuration packages/models/src/models/zai.ts	Added new provider entry for glm-5.1 model under Novita provider with pricing, capabilities (streaming, reasoning, tools, JSON output), and capacity limits (204800 token context, 131100 max output).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding Novita as a provider for the GLM-5.1 model, which aligns perfectly with the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-glm-5.1-novita

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[Copilot]

Pull request overview

Adds Novita as an additional provider option for the existing Zhipu GLM-5.1 model entry, aligning provider-specific limits and pricing with Novita’s listing.

Changes:

• Add a new providerId: "novita" mapping for zai-org/glm-5.1.
• Configure Novita-specific pricing (input/cached input/output) and capability flags (streaming/reasoning/tools/jsonOutput).
• Set Novita-specific context and max output limits (204.8K context, 131.1K max output).

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