feat: add Avian as a new LLM provider

[avianion]

Summary

Adds Avian as a new OpenAI-compatible LLM provider. Avian provides fast inference for top open-source models.

Available Models

Model	Context	Input $/M	Output $/M
DeepSeek V3.2	164K	$0.26	$0.38
Kimi K2.5	131K	$0.45	$2.20
GLM-5	131K	$0.30	$2.55
MiniMax M2.5	1M	$0.30	$1.10

Changes (13 files)

File	Change
core/llm/llms/Avian.ts	New provider class extending OpenAI (13 lines)
core/llm/llms/index.ts	Register in LLMClasses array
core/llm/autodetect.ts	Add to PROVIDER_HANDLES_TEMPLATING
core/llm/toolSupport.ts	Add tool support for avian models
packages/openai-adapters/src/types.ts	Add z.literal("avian") to Zod schema
packages/openai-adapters/src/index.ts	Add case "avian" to constructLlmApi
packages/llm-info/src/providers/avian.ts	Model metadata (context lengths, regex)
packages/llm-info/src/index.ts	Register in allModelProviders
gui/src/pages/AddNewModel/configs/models.ts	4 model packages
gui/src/pages/AddNewModel/configs/providers.ts	Provider card with API key input
gui/public/logos/avian.png	Provider logo (placeholder — will replace with official)
docs/customize/model-providers/more/avian.mdx	Docs page with YAML/JSON config examples
docs/docs.json	Sidebar nav entry

Usage

models:
  - model: deepseek/deepseek-v3.2
    provider: avian
    apiKey: <AVIAN_API_KEY>

Test plan

• Provider appears in "Add New Model" UI
• API key can be entered and saved
• All 4 models are listed in model selector
• Chat completions work with each model
• Streaming works correctly
• Tool/function calling works

cc @RomneyDa @sestinj — follows the same pattern as the z.AI provider PR (#10638). Happy to address any feedback!

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Summary by cubic

Add Avian as an OpenAI-compatible provider with streaming, tool calling, image support, and parallel generation for DeepSeek V3.2, Kimi K2.5, GLM-5, and MiniMax M2.5. Includes UI, docs, llm-info metadata, schema/VS Code config support, and autodetect templating.

• New Features

  • OpenAI adapter for avian at https://api.avian.io/v1/ (fixed trailing-slash base URL); added LLM class and llm-info provider.
  • Enabled tool/function calling, image support, and parallel generation for supported models.
  • UI: provider card with API key input and official logo; four model packages in Add New Model; added to control-plane/config-types enums and VS Code schema for validation and autocomplete.
  • Docs page and sidebar entry for configuration.

• Migration

  • Set AVIAN_API_KEY or enter it in the UI.
  • Configure models with provider: "avian" (e.g., deepseek/deepseek-v3.2).

^{Written for commit a2f4b86. Summary will update on new commits.}

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[cubic-dev-ai]

1 issue found across 13 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="packages/openai-adapters/src/index.ts">

<violation number="1" location="packages/openai-adapters/src/index.ts:107">
P2: Inconsistent trailing slash in Avian base URL - should use `/v1/` to match other providers and prevent endpoint resolution issues</violation>
</file>

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[avianion]

I have read the CLA Document and I hereby sign the CLA

[avianion]

Fixed the trailing slash issue flagged by cubic-dev — updated base URL to https://api.avian.io/v1/ for consistency with other providers (f3345db).

[avianion]

Friendly follow-up — this PR is still active and ready for review. Would appreciate a look when you get a chance! cc @sestinj

[avianion]

Friendly follow-up — this PR is still active and ready for review. All feedback has been addressed. Would appreciate a look when you get a chance! cc @sestinj

[avianion]

Hey @sestinj @RomneyDa — friendly follow-up on this PR. Avian is an OpenAI-compatible inference provider that's already live and powering apps like ISEKAI ZERO. This is a lightweight integration (standard OpenAI-compatible endpoint) and we're happy to address any feedback or make adjustments. Would love to get this merged if you have a moment to review. Thanks!

[avianion]

Merged latest upstream main to resolve merge conflicts. Kept both Avian and new Tensorix provider in autodetect.ts.

[RomneyDa]

@avianion can you check PROVIDER_HANDLES_TEMPLATING, PROVIDER_SUPPORTS_IMAGES, and other fields which will cause issues here? Look up e.g. "nebius" to see where needs to be added.

Also, looks like the logo might be just a green square?

[avianion]

Addressed feedback in d7f2f57:

• Added avian to PROVIDER_SUPPORTS_IMAGES (enables image support for vision-capable models)
• Added avian to PARALLEL_PROVIDERS (enables parallel generation)
• Replaced the placeholder logo (was a 32x32 green square) with the proper Avian logomark (512x512, RGBA)

PROVIDER_HANDLES_TEMPLATING already had avian (line 75). Let me know if anything else needs attention!

[avianion]

@RomneyDa All feedback has been addressed in commit d7f2f57 — added avian to PROVIDER_SUPPORTS_IMAGES and PARALLEL_PROVIDERS, confirmed PROVIDER_HANDLES_TEMPLATING already included it, and replaced the placeholder logo with the proper Avian logomark (512×512). Could you re-review when you get a chance? Thanks!

[avianion]

Hi @RomneyDa, just wanted to flag that all the feedback from your review has been addressed in commit d7f2f57:

• PROVIDER_HANDLES_TEMPLATING: "avian" added ✅
• PROVIDER_SUPPORTS_IMAGES: "avian" added ✅
• PARALLEL_PROVIDERS: "avian" added ✅
• Logo: Replaced the 99-byte green square placeholder with a proper 512x512 Avian logomark (71KB) ✅

The trailing slash on the base URL (/v1/) was also fixed in f3345db.

Would you mind taking another look when you get a chance? Thanks!

[avianion]

@RomneyDa All your feedback has been addressed in commit d7f2f57:

• Added avian to PROVIDER_HANDLES_TEMPLATING
• Added avian to PROVIDER_SUPPORTS_IMAGES
• Added avian to PARALLEL_PROVIDERS
• Replaced the green square logo with a proper 512x512 Avian logomark

Could you re-review when you get a chance? Thank you!

[avianion]

Addressed the remaining review feedback:

Fixes in this update (a2f4b86):

1. Added avian to provider schemas — was missing from:

   • packages/config-types/src/index.ts (modelDescriptionSchema.provider enum)
   • core/control-plane/schema.ts (modelDescriptionSchema.provider enum)
   • extensions/vscode/config_schema.json (main provider enum, apiKey-required enum, and markdown description)

2. Fixed trailing slash in LLM class apiBase — core/llm/llms/Avian.ts had https://api.avian.io/v1 (without trailing slash), which causes new URL("chat/completions", apiBase) to resolve to https://api.avian.io/chat/completions instead of the correct https://api.avian.io/v1/chat/completions. Now matches the fix already applied in the openai-adapters layer.

Previously addressed (d7f2f57, f3345db):

• Trailing slash in openai-adapters base URL ✓
• Added to PROVIDER_HANDLES_TEMPLATING, PROVIDER_SUPPORTS_IMAGES, PARALLEL_PROVIDERS ✓
• Replaced placeholder logo with proper 512×512 Avian logomark ✓

CI note: The 7 failing "Continuous AI" checks all show "Agent encountered an error" — these are automated AI agent tasks on hub.continue.dev that appear to be experiencing internal errors, not issues caused by this PR's code changes. All actual CI checks (build, test, lint, prettier, core-checks, gui-checks, packages-checks, e2e tests) are passing.