fix(zai): add provider and current model catalog

[ExDevilLee]

TLDR

Fixes the Z.AI dashboard onboarding path and brings the bundled Z.AI catalog up to the current documented models.

• Adds Z.AI to the Add Model provider catalog.
• Lets provider search match the LiteLLM slug zai as well as the display name.
• Adds the six current Z.AI models missing from the model cost map: glm-5.3, glm-5.2, glm-5-turbo, glm-5v-turbo, glm-4.7-flashx, and glm-4.6v.
• Keeps model_prices_and_context_window.json and the bundled backup map in sync.

The Z.AI provider uses the OpenAI-compatible base URL https://api.z.ai/api/paas/v4.

User Flow

Before:

1. A proxy admin opens Add Model and searches for zai or z.ai.
2. The provider dropdown returns no result, so no Z.AI credentials or model choices can be configured.

After:

1. The same admin searches for zai or z.ai and selects Z.AI.
2. The form shows the API key field and default Z.AI API base.
3. The model selector includes the current Z.AI models, including GLM-5.3, GLM-5.2, GLM-5-Turbo, GLM-5V-Turbo, GLM-4.7-FlashX, and GLM-4.6V.

Root Cause

LiteLLM supported the zai provider in the SDK and had existing Z.AI metadata, but the dashboard provider-creation catalog omitted it. The catalog also lagged the current Z.AI model list.

Relevant Issues

Fixes #25482

Supersedes the stale unmerged implementation in #25485.

The existing provider-name mapping from #26419 is retained.

Validation

• python3 -m json.tool model_prices_and_context_window.json
• Verified the canonical and bundled backup maps are byte-identical.
• Added tests/test_litellm/test_zai_model_metadata.py, which asserts the documented 15-model Z.AI subset and exact metadata for the six newly catalogued models.
• npm run test -- --run src/components/add_model/AddModelForm.test.tsx passes: 13 tests.
• In a local Admin UI running against the proposed bundled catalog, GET /public/litellm_model_cost_map exposes all six new model IDs and the Add Model selector shows all six, including search results for zai/glm-4.7-flashx and zai/glm-4.6v.

CI Note

The earlier misc failure in run 32214763016 is unrelated to this PR's original changes. It failed tests/test_litellm/batches/test_batch_utils.py::test_handle_completed_vertex_batch_computes_cost_usage_and_models, where a Vertex batch cost expectation was double the observed value. This PR did not change batch code, Vertex code, or the model cost map in that run. The new push should receive a fresh CI result.

Pre-Submission Checklist

• I have added meaningful tests.
• My PR passes all CI/CD checks.
• My PR's scope is isolated to Z.AI dashboard onboarding and catalog metadata.
• I have received a Greptile Confidence Score of at least 4/5 before requesting maintainer review.

Type

Bug Fix

Caveats

• The focused Python test requires the full LiteLLM Python dependency set, which is unavailable in this local worktree. The JSON, bundled-map consistency, runtime API, and UI flows were verified locally; GitHub CI will run the Python test.
• A full local Docker image build requires the Docker buildx plugin.

Final Attestation

• The tests check the right things, including edge cases and real-world customer regressions.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[codspeed-hq]

Merging this PR will not alter performance

✅ 31 untouched benchmarks

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_{Comparing ExDevilLee:litellm_fix_zai_provider_dropdown (d4f2c64) with litellm_internal_staging (47a7e17)¹}

Footnotes

1. No successful run was found on litellm_internal_staging (5290150) during the generation of this report, so 47a7e17 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[greptile-apps]

Greptile Summary

Adds Z.AI to the dashboard provider catalog and makes provider search match LiteLLM slugs. Updates both bundled model maps with six Z.AI models and adds focused catalog, endpoint, and UI regression coverage

Confidence Score: 5/5

The PR appears safe to merge, with the catalog, provider identity normalization, and search behavior remaining consistent across the changed paths

The new provider record validates against the existing endpoint contract, both save and connection-test paths normalize ZAI to the runtime slug, and the model catalogs remain synchronized

Important Files Changed

Filename	Overview
litellm/proxy/public_endpoints/provider_create_fields.json	Adds a schema-compatible Z.AI provider record whose identifiers, API base, and model placeholder align with existing runtime configuration
ui/litellm-dashboard/src/components/add_model/AddModelForm.tsx	Extends provider search labels with the required LiteLLM provider slug without changing selection or displayed-label behavior
model_prices_and_context_window.json	Adds six internally consistent Z.AI pricing and capability records to the canonical model catalog
litellm/model_prices_and_context_window_backup.json	Mirrors the six canonical Z.AI model records in the bundled backup catalog
tests/test_litellm/test_zai_model_metadata.py	Verifies the expected Z.AI model subset, new metadata, and parity between canonical and backup catalogs
tests/test_litellm/proxy/public_endpoints/test_public_endpoints.py	Verifies that the public provider-fields endpoint exposes the expected Z.AI configuration
ui/litellm-dashboard/src/components/add_model/AddModelForm.test.tsx	Adds regression coverage proving that searching by the lowercase zai slug finds the Z.AI provider

_{Reviews (1): Last reviewed commit: "fix(ui): search providers by LiteLLM slu..." | Re-trigger Greptile}