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fix(opencode-go): cap mimo-v2.5-pro max_tokens at 131072

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The opencode-go relay defaults max_tokens to 262144 when none is sent,
but Xiami mimo-v2.5-pro only supports 131072 completion tokens — every
request 400s with "max_tokens is too large: 262144" before the agent
can do anything.

Add a get_max_tokens(model) hook on ProviderProfile (default returns
default_max_tokens) so profiles fronting multiple upstreams can vary
the cap per-model. Wire chat_completions transport through the hook.
Override on OpenCodeGoProfile with mimo-v2.5-pro=131072.

Only mimo-v2.5-pro is capped — other opencode-go models (kimi, glm,
qwen, minimax, other mimo variants) unchanged.
This commit is contained in:
teknium1 2026-05-28 20:35:04 -07:00 • committed by Teknium
parent bfecfabd0f
commit 8cf6b3da9d
3 changed files with 35 additions and 2 deletions
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8
agent/transports/chat_completions.py
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@ -476,13 +476,17 @@ class ChatCompletionsTransport(ProviderTransport):
ephemeral = params.get("ephemeral_max_output_tokens")
user_max = params.get("max_tokens")
anthropic_max = params.get("anthropic_max_output")
# Per-model default cap — profiles override get_max_tokens() when
# they front several backends with different completion-token limits
# (e.g. opencode-go: mimo-v2.5-pro = 131072).
profile_max = profile.get_max_tokens(model)
if ephemeral is not None and max_tokens_fn:
api_kwargs.update(max_tokens_fn(ephemeral))
elif user_max is not None and max_tokens_fn:
api_kwargs.update(max_tokens_fn(user_max))
elif profile.default_max_tokens and max_tokens_fn:
api_kwargs.update(max_tokens_fn(profile.default_max_tokens))
elif profile_max and max_tokens_fn:
api_kwargs.update(max_tokens_fn(profile_max))
elif anthropic_max is not None:
api_kwargs["max_tokens"] = anthropic_max