[BOT ISSUE] Databricks: add missing `databricks-claude-haiku-4-5`, `databricks-claude-opus-4-5`, `databricks-claude-opus-4-1`

[github-actions]

Summary

Three Databricks Foundation Model API pay-per-token Anthropic Claude models are missing from packages/proxy/schema/model_list.json. This is a follow-up to #559, #585, #591, and #592, continuing to address the Databricks catalog gap. Issue #592 already covers databricks-claude-sonnet-4-5, databricks-claude-opus-4-6, and databricks-claude-sonnet-4; this issue covers the remaining three Claude models.

Missing Model IDs

Model ID	Context Window	Max Output	Supported Inputs	Underlying Model
databricks-claude-haiku-4-5	not published	not published	text, image	Claude Haiku 4.5
databricks-claude-opus-4-5	200,000	not published	text, image	Claude Opus 4.5
databricks-claude-opus-4-1	200,000	32,000	text, image	Claude Opus 4.1

Details

All three models appear on both the Foundation model overview regional availability table and the Supported models page. They are available as pay-per-token serverless endpoints.

Suggested entries

"databricks-claude-haiku-4-5": {
  "format": "openai",
  "flavor": "chat",
  "multimodal": true,
  "displayName": "Claude Haiku 4.5",
  "available_providers": ["databricks"]
},
"databricks-claude-opus-4-5": {
  "format": "openai",
  "flavor": "chat",
  "multimodal": true,
  "displayName": "Claude Opus 4.5",
  "max_input_tokens": 200000,
  "available_providers": ["databricks"]
},
"databricks-claude-opus-4-1": {
  "format": "openai",
  "flavor": "chat",
  "multimodal": true,
  "displayName": "Claude Opus 4.1",
  "max_input_tokens": 200000,
  "max_output_tokens": 32000,
  "available_providers": ["databricks"]
}

Pricing omitted per Databricks provider constraints (no stable public per-model pricing source).

Verification checklist

• Cross-source: Model IDs confirmed on Foundation model overview and Supported models page
• Recent commits: Not covered by any recent commit to model_list.json
• ID format: Follows existing databricks-claude-* naming convention (e.g., databricks-claude-3-7-sonnet)
• Existing issues: Not covered by [BOT ISSUE] Databricks: add missing databricks-claude-opus-4-7, databricks-claude-sonnet-4-6, databricks-gpt-5-5 #559, [BOT ISSUE] Databricks: add missing databricks-gpt-5-5-pro, databricks-gemini-3-5-flash, databricks-gpt-5-4-mini #585, [BOT ISSUE] Databricks: add missing databricks-llama-4-maverick, databricks-gpt-oss-120b, databricks-gemma-3-12b #591, or [BOT ISSUE] Databricks: add missing databricks-claude-sonnet-4-5, databricks-claude-opus-4-6, databricks-claude-sonnet-4 #592 (which cover other Databricks Claude models)

Verification notes

Field	Source	Notes
Model IDs	Foundation model overview + Supported models page	Listed in both pay-per-token model tables
Context window (200K for Opus 4.5 and 4.1)	Supported models page	"200K token context window"
Max output (32K for Opus 4.1)	Supported models page	"200K token context window and 32K output token capabilities"
Haiku 4.5 context/output	NOT PUBLISHED	Not specified on the supported models page
format: "openai", flavor: "chat"	Catalog convention	All Databricks models use openai format
multimodal: true	Supported models page	Inputs: text, image
input_cost_per_mil_tokens / output_cost_per_mil_tokens	NOT PUBLISHED	Databricks does not publish stable per-model pricing

Local files inspected

• packages/proxy/schema/model_list.json — grep for databricks-claude-haiku, databricks-claude-opus-4-5, and databricks-claude-opus-4-1 returns no matches

Source URLs

• https://docs.databricks.com/aws/en/machine-learning/model-serving/foundation-model-overview
• https://docs.databricks.com/aws/en/machine-learning/foundation-model-apis/supported-models

{
  "kind": "missing_model",
  "provider": "databricks",
  "models": ["databricks-claude-haiku-4-5", "databricks-claude-opus-4-5", "databricks-claude-opus-4-1"],
  "status": "active",
  "model_specs": {
    "databricks-claude-haiku-4-5": {
      "format": "openai",
      "flavor": "chat",
      "multimodal": true,
      "displayName": "Claude Haiku 4.5",
      "available_providers": ["databricks"]
    },
    "databricks-claude-opus-4-5": {
      "format": "openai",
      "flavor": "chat",
      "multimodal": true,
      "displayName": "Claude Opus 4.5",
      "max_input_tokens": 200000,
      "available_providers": ["databricks"]
    },
    "databricks-claude-opus-4-1": {
      "format": "openai",
      "flavor": "chat",
      "multimodal": true,
      "displayName": "Claude Opus 4.1",
      "max_input_tokens": 200000,
      "max_output_tokens": 32000,
      "available_providers": ["databricks"]
    }
  },
  "source_urls": [
    "https://docs.databricks.com/aws/en/machine-learning/model-serving/foundation-model-overview",
    "https://docs.databricks.com/aws/en/machine-learning/foundation-model-apis/supported-models"
  ]
}

[github-actions]

Prepared catalog updates for databricks-claude-haiku-4-5, databricks-claude-opus-4-5, databricks-claude-opus-4-1. Added models: databricks-claude-haiku-4-5, databricks-claude-opus-4-5, databricks-claude-opus-4-1.

Verification sources: https://docs.databricks.com/aws/en/machine-learning/model-serving/foundation-model-overview, https://docs.databricks.com/aws/en/machine-learning/foundation-model-apis/supported-models
Verified metadata applied:

• databricks-claude-haiku-4-5: format=openai, flavor=chat, displayName=Claude 4.5 Haiku, max_input_tokens=200000, max_output_tokens=not provided, pricing=not provided, providers=databricks, multimodal=true
• databricks-claude-opus-4-5: format=openai, flavor=chat, displayName=Claude 4.5 Opus, max_input_tokens=200000, max_output_tokens=32000, pricing=not provided, providers=databricks, multimodal=true
• databricks-claude-opus-4-1: format=openai, flavor=chat, displayName=Claude 4.1 Opus, max_input_tokens=200000, max_output_tokens=32000, pricing=not provided, providers=databricks, multimodal=true

Opened #649 to apply the catalog update.