[Reasoning] Break repeating reasoning loops by forcing the reasoning end sequence - #52677

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amittell wants to merge 13 commits into

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amittell:feat/reasoning-loop-break

Commits on Sep 26, 2026

[Reasoning] Add reasoning loop breaking to ReasoningConfig and the request APIs

amittell
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claude
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8d00cbc
[Reasoning] Correct the loop-break tuning guidance

amittell
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claude
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6c4423d
[Docs] Reasoning loop breaking: the example needs a phrase before </think>

amittell
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claude
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0329137
[Reasoning] Correct the pattern-size tuning rule, and append the new sampling parameter

amittell
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claude
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a44e0f6
[Reasoning] Detect reasoning loops on device in Model Runner V2

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amittell
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c3cd870
[Bugfix][Reasoning] Close the V2 section on a committed forced end sequence

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amittell
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1bdec88
[Reasoning] Pin that a loop-break-only request reaches the V2 logits pipeline

amittell
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claude
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338a5be
[Reasoning] Port the loop-break sampler test to the #56497 Sampler API

amittell
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claude
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3ea843c
[Reasoning] Count reasoning loop breaks in vllm:thinking_loop_breaks_total
amittell
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ea66f1f
[Reasoning] Add a ramped release for reasoning loop breaks
amittell
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bc0f26e
[Reasoning] Add docstrings to the functions this PR touches
amittell
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4c29989
[Reasoning] Reject reasoning loop breaking on the V1 model runner
amittell
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f570c50
Merge branch 'main' into feat/reasoning-loop-break
amittell
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2dbbacb