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fix(openrouter): surface first-party router models (Fusion) in the model picker #49188

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fix(openrouter): surface first-party router models (Fusion) in the model picker #49188

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18 changes: 17 additions & 1 deletion hermes_cli/models.py
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@
# NVIDIA
("nvidia/nemotron-3-super-120b-a12b", ""),
# OpenRouter routers
("openrouter/fusion", "multi-model deliberation (panel + judge); priced as sum of all completions"),
("openrouter/pareto-code", "auto-routes to cheapest coder meeting openrouter.min_coding_score"),
# Free tier
("openrouter/elephant-alpha", "free"),
Expand Down Expand Up @@ -1357,6 +1358,14 @@ def fetch_openrouter_models(
fallback = list(remote) if remote else list(OPENROUTER_MODELS)
preferred_ids = [mid for mid, _ in fallback]

# Ensure OpenRouter's first-party deliberation routers are always offered in
# the picker even when the (remote) curated manifest omits them. These are
# known-good meta routers we vouch for; they report empty
# supported_parameters but drive the agent loop fine (verified for fusion).
for _router_id in ("openrouter/fusion",):
if _router_id not in preferred_ids:
preferred_ids.append(_router_id)

try:
req = urllib.request.Request(
"https://openrouter.ai/api/v1/models",
Expand Down Expand Up @@ -1388,7 +1397,14 @@ def fetch_openrouter_models(
# Hide models that don't advertise tool-calling support — hermes-agent
# requires it and surfacing them leads to immediate runtime failures
# when the user selects them. Ported from Kilo-Org/kilocode#9068.
if not _openrouter_model_supports_tools(live_item):
#
# Exception: OpenRouter's own first-party router models (openrouter/*,
# e.g. fusion, auto, pareto-code) are deliberation/meta routers that
# report empty supported_parameters but still drive the agent loop fine
# — they synthesize a final answer server-side. They're in our curated
# list precisely because we vouch for them, so don't let the generic
# tool-support gate hide them.
if not preferred_id.startswith("openrouter/") and not _openrouter_model_supports_tools(live_item):
continue
desc = "free" if _openrouter_model_is_free(live_item.get("pricing")) else ""
curated.append((preferred_id, desc))
Expand Down