Add support for Z.AI/Zhipu AI, xAI, and Synthetic.new models

[Sewer56]

Just adding whatever was in my usage, but missing from splitrail.

Summary

• Added 7 new AI models with verified pricing from Z.AI (Zhipu AI), xAI, and Synthetic.new
• Added 1 model alias for third-party naming conventions (zai-glm-4.6 -> glm-4.6)
  • This was a rename on OpenCode's end, at one point. Or specifically on models.dev

Models Added

Z.AI (Zhipu AI) Models

• glm-4.6: $0.60 input / $0.11 cached / $2.20 output
• glm-4.7: $0.60 input / $0.11 cached / $2.20 output (latest flagship)
• glm-4.7-flash: FREE (designed for local deployment)
  • It doesn't say 'free time limited' on the website, so we'll see.
• glm-4.6v: $0.30 input / $0.05 cached / $0.90 output (vision model)

https://docs.z.ai/guides/overview/pricing

Popular with 'GLM Coding Plan'.

xAI Models

• grok-code-fast-1: $0.20 input / $0.02 cached / $1.50 output (314B-parameter MoE)

https://x.ai/news/grok-code-fast-1

Synthetic.new Models

• hf:zai-org/GLM-4.6: $0.55 input / $2.19 output
• hf:MiniMaxAI/MiniMax-M2: $0.55 input / $2.19 output

https://synthetic.new/chat/select-model (might require sign-in)

Aliases Added

• zai-glm-4.6 -> glm-4.6

Details

All models use OpenAI-style cached input pricing where applicable. Pricing is verified from official sources and marked as not estimated.

[coderabbitai]

📝 Walkthrough

Walkthrough

New model entries have been added to the MODEL_INDEX map for Zhipu AI (Z.AI), xAI, and Synthetic.new providers with explicit pricing structure and caching configurations. Additionally, an alias mapping was created to enable canonical model name resolution.

Changes

Cohort / File(s)	Summary
Model Registry Expansion src/models.rs	Added multiple new model entries across Z.AI, xAI, and Synthetic.new sections with PricingStructure (Flat/Tiered) and CachingSupport configurations (+75 lines). Added alias "zai-glm-4.6" → "glm-4.6" for canonical model name resolution.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 New models hop into the registry bright,
With pricing tiers and caching just right,
Each alias maps the way home,
Through Zhipu, xAI, the whole model rome! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: adding support for multiple new AI models from three providers (Z.AI/Zhipu AI, xAI, and Synthetic.new), which directly matches the core changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing touches

• 📝 Generate docstrings

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[mike1858]

Thank you!

[Sewer56]

All good 👌