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feat(models): add stealth/union-alpha to the OpenRouter free-tier catalog

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Union Alpha is OpenRouter's new $0 stealth model (262,144 ctx, tools +
tool_choice supported, text+image in). It carries no ":free" suffix, so it
needs an explicit "free, stealth model" description and an _OPENROUTER_ONLY
entry to keep it out of the derived Nous Portal list, plus a "union-alpha"
DEFAULT_CONTEXT_LENGTHS key so the offline resolver returns 262144 instead
of the 256K catch-all. Docs manifest regenerated in the same commit.

Live gate: max_tokens=64 tool-calling completion on origin/main key returned
200, echoed model stealth/union-alpha, usage.cost=0, finish_reason=tool_calls.
This commit is contained in:
teknium1
2026-09-16 09:53:39 -07:00
committed by Teknium
parent 80ab36e4a9
commit d0aecdf352
3 changed files with 13 additions and 5 deletions
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5
agent/model_metadata.py
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@@ -380,9 +380,10 @@ DEFAULT_CONTEXT_LENGTHS = {
"solar-open2": 262144, "solar-pro3": 131072, "solar-pro2": 65536, "solar-mini": 32768,
# Tencent Hunyuan (262144 = 256 × 1024, aligned with OpenRouter live metadata)
"hy4-preview": 1_048_576, "hy3-preview": 262144, "hy3": 262144,
# "Ox Alpha" stealth model (OpenCode Zen / OpenRouter slugs); NVIDIA Nemotron (128K
# "Ox Alpha" stealth model (OpenCode Zen / OpenRouter slugs); "Union Alpha" stealth model
# (OpenRouter ``stealth/union-alpha``, 262144 per /api/v1/models); NVIDIA Nemotron (128K
# except 3.5 Lightning); Poolside Laguna 2.1 (:free / -free slugs); Arcee; OpenRouter.
"x-preview-f": 1_048_576, "ox-alpha": 1_048_576,
"x-preview-f": 1_048_576, "ox-alpha": 1_048_576, "union-alpha": 262144,
"nemotron-3.5-lightning": 1_000_000, "nemotron": 131072,
"laguna-s-2.1": 262144, "laguna-xs-2.1": 262144, "trinity": 262144, "elephant": 262144,
# Hugging Face Inference Providers — model IDs use org/name format

7
hermes_cli/models_catalog_static.py
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@@ -23,6 +23,7 @@ _OPENROUTER_DESCRIPTIONS = {
"openai/gpt-6-astra-flex": "0.5x price, flex tier",
"openai/gpt-6-astra-pro-fast": "2x price, priority tier",
"openai/gpt-6-astra-pro-flex": "0.5x price, flex tier",
"stealth/union-alpha": "free, stealth model",
}
OPENROUTER_MODELS: list[tuple[str, str]] = [
(mid, _OPENROUTER_DESCRIPTIONS.get(mid, "free" if mid.endswith(":free") else ""))
@@ -43,14 +44,16 @@ OPENROUTER_MODELS: list[tuple[str, str]] = [
"openrouter/pareto-code", "thinkingmachines/inkling:free", "thinkingmachines/inkling-small:free",
"minimax/minimax-m3:free", "z-ai/glm-5.2:free", "poolside/laguna-s-2.1:free", "poolside/laguna-xs-2.1:free",
"nvidia/nemotron-3-super-120b-a12b:free", "nvidia/nemotron-3-ultra-550b-a55b:free",
"nvidia/nemotron-3.5-lightning:free",
"nvidia/nemotron-3.5-lightning:free", "stealth/union-alpha",
)
]
# OpenRouter entries the Nous Portal does not carry (routing/fast variants, free tier).
# OpenRouter entries the Nous Portal does not carry (routing/fast variants, free tier —
# ``stealth/union-alpha`` is a $0 stealth SKU without the ``:free`` suffix).
_OPENROUTER_ONLY = {
"anthropic/claude-opus-5-fast", "anthropic/claude-opus-4.8-fast", "meta/muse-spark-1.2",
"meta/muse-spark-1.2-contributor", "meta/muse-spark-1.3", "meta/muse-spark-1.3-contributor", "openrouter/pareto-code",
"stealth/union-alpha",
}

6
website/static/api/model-catalog.json
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@@ -1,6 +1,6 @@
{
"version": 1,
"updated_at": "2026-09-10T16:09:08Z",
"updated_at": "2026-09-16T16:50:25Z",
"metadata": {
"source": "hermes-agent repo",
"docs": "https://hermes-agent.nousresearch.com/docs/reference/model-catalog"
@@ -244,6 +244,10 @@
{
"id": "nvidia/nemotron-3.5-lightning:free",
"description": "free"
},
{
"id": "stealth/union-alpha",
"description": "free, stealth model"
}
]
},