[BOT ISSUE] Perplexity: add missing sonar-deep-research model

[github-actions]

Gap

The Perplexity model sonar-deep-research is missing from packages/proxy/schema/model_list.json. It is listed on both Perplexity's model cards page and pricing page alongside the existing sonar, sonar-pro, and sonar-reasoning-pro models that are already in the catalog.

Official sources

Field	Value	Source
Model ID	sonar-deep-research	Perplexity model cards page
Input cost	$2 / MTok	Perplexity pricing page
Output cost	$8 / MTok	Perplexity pricing page
Additional costs	Citation tokens: $2/MTok, Reasoning tokens: $3/MTok, Search queries: $5/1K	Perplexity pricing page

• Model cards: https://docs.perplexity.ai/guides/model-cards
• Pricing: https://docs.perplexity.ai/pricing

Suggested entry

"sonar-deep-research": {
  "format": "openai",
  "flavor": "chat",
  "input_cost_per_mil_tokens": 2,
  "output_cost_per_mil_tokens": 8,
  "displayName": "Sonar Deep Research",
  "available_providers": ["perplexity"]
}

Notes:

• Context window and max output tokens are not specified on the Perplexity docs pages; existing sonar models in the catalog use max_input_tokens: 128000 but this may differ for deep research.
• Perplexity docs describe this model as available via the "Agent API deep-research preset" — it may require a different API path than standard chat completions. This should be verified before adding.
• Pricing follows the same pattern as sonar-reasoning-pro ($2/$8) but with additional cost dimensions (citation tokens, reasoning tokens, search queries) that aren't currently representable in the model schema.

Local files inspected

• packages/proxy/schema/model_list.json — no entry for sonar-deep-research
• Existing sonar-reasoning-pro entry (line 2842) used as reference pattern

{
  "kind": "missing_model",
  "provider": "perplexity",
  "models": ["sonar-deep-research"],
  "status": "active",
  "source_urls": [
    "https://docs.perplexity.ai/guides/model-cards",
    "https://docs.perplexity.ai/pricing"
  ]
}

[github-actions]

Prepared catalog updates for sonar-deep-research. Added models: sonar-deep-research.

Verification sources: https://docs.perplexity.ai/guides/model-cards, https://docs.perplexity.ai/pricing, https://docs.perplexity.ai/docs/sonar/models/sonar-deep-research, https://docs.perplexity.ai/api-reference/sonar-post
Verified metadata applied:

• sonar-deep-research: format=openai, flavor=chat, displayName=Sonar Deep Research, max_input_tokens=128000, max_output_tokens=not provided, pricing(input/output per 1M)=2/8, providers=perplexity

Opened #678 to apply the catalog update.