unsloth/studio/backend
Daniel Han 078ae64cdf Studio: don't re-prompt after model already produced a complete answer
The plan-without-action re-prompt at
`studio/backend/core/inference/llama_cpp.py` fires when the model
emits intent-only language ("first I'll ...", "let me ...") without
calling a tool. Previously the heuristic only checked an intent regex
and a 2000-char length cap. The same intent words occur in long
explanations that accompany REAL code or markup, so a complete reply
like "First, let me set up pygame. ```python ... ```" still tripped
the re-prompt, and the synthetic follow-up ("STOP. Do NOT write code
or explain.") wiped the user-visible answer.

Reproduced at scale in a 900-run sweep across 15 Qwen3.5/3.6 GGUF
configs: prompts that emit code or markup (Create a Python game,
Create a Flappy Bird game, weather dashboard HTML, sloth SVG)
landed empty `final_text` for the majority of seeds even on the
strongest configs.

Fix adds a `_HAS_ANSWER_ARTIFACT` regex covering:
  - closed code fences (```...```)
  - HTML pages (<!doctype, <html)
  - complete SVG (<svg...</svg>)
  - 2+ item numbered lists

and a `and not _HAS_ANSWER_ARTIFACT.search(_stripped)` guard on the
re-prompt condition. Plan-only stalls still re-prompt; complete
responses no longer do.

13 new unit tests in `test_llama_cpp_reprompt_guard.py` pin both
directions (artifact present -> no re-prompt; plan-only -> still
re-prompts).
2026-05-23 14:00:39 +00:00
..
assets Add Qwen3.6 inference defaults for Studio (#5065) 2026-04-16 11:42:42 -07:00
auth studio: security and hardening pass (auth rate-limit, sandbox, path containment, schema validation, headers) (#5375) 2026-05-13 06:12:18 -07:00
core Studio: don't re-prompt after model already produced a complete answer 2026-05-23 14:00:39 +00:00
loggers Studio: stop truncating long log lines as suspected base64 (#5335) 2026-05-08 13:07:18 +04:00
models Studio: PDF / document attachments for Anthropic + OpenAI (#5689) 2026-05-22 06:22:57 -07:00
plugins fix(gh_client): fail fast on 401/403 auth errors instead of retrying forever (#5325) (#5329) 2026-05-08 21:57:41 +04:00
requirements ci: unblock Studio Windows + Linux + Mac smoke (#5741) 2026-05-23 06:59:16 -07:00
routes Studio: PDF / document attachments for Anthropic + OpenAI (#5689) 2026-05-22 06:22:57 -07:00
state unsloth run: add --enable-tools/--disable-tools server-side tool policy (#5277) 2026-05-05 12:45:15 +04:00
storage Studio: persist chat history in backend storage (#5272) 2026-05-22 06:18:05 -07:00
tests Studio: don't re-prompt after model already produced a complete answer 2026-05-23 14:00:39 +00:00
utils Studio: tools, thinking blocks, code execution and web search for safetensors (#5520) 2026-05-19 06:30:17 -07:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
_platform_compat.py Fix Studio crash on Anaconda/conda-forge Python (#4484) 2026-03-22 05:36:55 -07:00
colab.py Fix/studio colab button message: Add fallback message for Colab Studio button when proxy URL fails (#4866) 2026-04-05 21:57:45 -07:00
main.py Studio: persist chat history in backend storage (#5272) 2026-05-22 06:18:05 -07:00
run.py Studio: stop hint, Uvicorn log rename, reachability check + Mac UI CI retry hardening (#5503) 2026-05-17 07:44:06 -07:00
startup_banner.py Studio: stop hint, Uvicorn log rename, reachability check + Mac UI CI retry hardening (#5503) 2026-05-17 07:44:06 -07:00