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[Setup] Gemini code review - #2

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gemini-setup
Oct 27, 2025
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[Setup] Gemini code review#2
jiarong0907 merged 1 commit into
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gemini-setup

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Summary of Changes

Hello @jiarong0907, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request establishes the initial setup for a Gemini-powered code review system by introducing its configuration file. Concurrently, it enhances repository cleanliness by updating the .gitignore file to exclude common Python-related cache directories, streamlining version control and development workflows.

Highlights

  • Gemini Code Review Configuration: A new configuration file, .gemini/config.yaml, has been added to enable and configure the Gemini code review bot. This setup includes enabling lighthearted comments, setting a medium severity threshold for review comments, and disabling automatic help, summary, and code review comments upon pull request opening.
  • Git Ignore Updates: The .gitignore file has been updated to include .mypy_cache/* and .ruff_cache/*, ensuring that these generated cache directories are not tracked by Git.
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@jiarong0907
jiarong0907 merged commit 468ff4b into main Oct 27, 2025
@jiarong0907
jiarong0907 deleted the gemini-setup branch October 27, 2025 02:28

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Code Review

This pull request sets up Gemini code review by adding a configuration file and updating the .gitignore. The changes look good, but I have a few suggestions for the configuration to ensure it behaves as expected and to follow common file formatting practices. Specifically, there's a contradictory comment and a potentially misconfigured setting that would prevent reviews on PR creation. I've also suggested adding trailing newlines to both new/modified files and improving the patterns in .gitignore.

Comment thread .gitignore
Comment on lines +26 to +27
.mypy_cache/*
.ruff_cache/* No newline at end of file

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medium

For ignoring directories, it's more conventional to use a trailing slash (e.g., .mypy_cache/) instead of /*. Also, text files should ideally end with a newline. The suggestion below applies both of these improvements.

.mypy_cache/
.ruff_cache/

yl231 pushed a commit that referenced this pull request May 20, 2026
Weave Router v0.62 retook #1 on the leaderboard with Acc-Cost Arena
76.09 (up from 74.61 on v0.27), accuracy 79.32%, cost/1K $0.61.
Sqwish Router moves to #2 at 75.27. New v0.62 row:

- Acc-Cost Arena: 74.61 → 76.09
- Accuracy: 78.43 → 79.32
- Cost/1K: $0.92 → $0.61
- Opt. Selection: 1.27 → 5.60
- Opt. Cost: 12.10 → 17.19
- Opt. Accuracy: 89.56 → 89.21
- Robustness: 79.05 → 79.76

Submission PR: #102

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
yl231 added a commit that referenced this pull request May 29, 2026
Weave Router v0.54 (commit bd64f8a), evaluated on the full split:
arena 0.7282, accuracy 76.32%, cost/1K $0.9442, robustness 100.00.
Ranks #2 by Acc-Cost Arena; existing entries shift down one rank.

Co-authored-by: Louie Lu <yl231@datalab2.cs.rice.edu>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
yl231 added a commit that referenced this pull request May 31, 2026
* Update leaderboard: add Nadir (#112), update AgentForge (#117)

- AgentForge (#117): refreshed to faithful post-fix metrics (arena 74.13,
  acc 74.72%, cost $0.13/1K, abnormal 0) — moves #13 -> #2.
- Nadir (#112): new entry, arena 73.33 (acc 74.87%, cost $0.29/1K) at #3.
  Optimality left as — pending review (computed 1.0/1.0/1.0 is an artifact of
  the submission listing only expensive optimality candidates).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Update Nadir Router link in README.md

---------

Co-authored-by: Louie Lu <yl231@datalab2.cs.rice.edu>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
yl231 added a commit that referenced this pull request Jun 12, 2026
* Fix cost accounting for reasoning tokens and zero-usage generations (#135)

Issue #135 reported two distinct cost-accounting gaps in the evaluator:

1. Reasoning tokens were never billed. calculate_inference_cost charged
   only input+output tokens, ignoring reasoning/"thinking" tokens, which
   providers bill at the completion rate but report only via the gap
   total_tokens - (input + output). They are now billed at the model's
   output rate (or an explicit reasoning_token_price_per_million when
   configured). Affected routers: Azure (8.6M tokens), Nadir (6.4M),
   vLLM-SR (2.0M).

2. Successful generations with no usable token usage were free. Rows with
   success=True and a non-empty answer but empty token_usage ({}) or
   output_tokens=0 passed the success-only validity gate from #118 and
   were scored as correct at $0 cost. The validity gate now also requires
   output_tokens > 0; such rows are treated as failed inference (scored as
   wrong, excluded from cost) consistently across the RouterArena score
   and the optimality pool. This extends the #118 empty-response fix
   rather than duplicating it.

Also adds:
- check_config_prediction_files.py: submission-time validation rejecting
  successful non-empty generations without usable output_tokens, so future
  submissions are caught up front.
- tools/audit_token_accounting.py: audit script reporting per-router
  reasoning-token magnitude and failed-inference counts to forward to the
  router authors.
- scripts/rescore_affected.sh: reproducible driver to re-score affected
  routers through the patched pipeline.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* Leaderboard: re-score reasoning-token routers under the #135 fix

Re-evaluated, at current model_cost.json prices, the routers whose models
emit reasoning tokens or zero-usage rows. Routers with neither are
unchanged.

- vLLM-SR: arena 75.38->72.15, acc 75.97->73.19, cost $0.11->$0.23/1k
  (reasoning tokens now billed; 279 zero-usage rows now scored as wrong)
- Nadir:   arena 73.33->72.29, acc 74.87->75.01, cost $0.29->$0.68/1k
- Azure:   arena 71.87->70.42, acc 72.82->72.94, cost $0.22->$0.73/1k

New top of leaderboard: Sqwish #1, AgentForge #2, Weave #3, Nadir #4,
vLLM-SR #5.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* Apply pre-commit fixes (ruff-format, codespell)

- ruff-format reflows the reasoning-cost expression and audit-script lines
  to match the repo's pinned formatter (ruff 0.11.7).
- Rename token shorthands it/ot/tt -> n_in/n_out/n_total in the audit
  script so codespell no longer flags "ot" as a misspelling.

No behavior change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Louie Lu <yl231@datalab2.cs.rice.edu>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
xufan866 pushed a commit to xufan866/RouterArena that referenced this pull request Aug 5, 2026
…s#172)

xAI retired `grok-4-1-fast-reasoning` on 2026-05-15 and silently redirects it
to grok-4.3 (low reasoning), which is stronger and ~5-6x pricier. Submissions
that selected the retired slug via xAI/OpenRouter were served grok-4.3 but
billed at the retired slug's $0.20/$0.50 price, inflating their cost-aware
Arena scores. Reported and audited by @loswald (thanks!).

Fix (prices the model that actually answered, not the requested alias):
- model_cost.json: add `grok-4.3` and `x-ai/grok-4.3` at $1.25/$2.50.
- evaluate_models.py: add `has_price()`; factor the cost lookup into
  `_lookup_cost_info()`.
- run.py: bill by `generated_result.model_used` when it is present and priced,
  else the router's selected model. Redirected slugs are now billed correctly.
- check_config_prediction_files.py: preflight warning for retired/redirected
  slugs (guardrail RouteWorks#1 from the issue).

Precision (only provably-redirected rows change; Azure-hosted Grok 4.1 is left
alone):
- cross-router  217 rows (openrouter, model_used=x-ai/grok-4.3) -> repriced
- vllm-sr       257 rows (openrouter, model_used=x-ai/grok-4.3) -> repriced
- nadir-tumbler 3571 rows (xAI, model_used absent): backfilled
  model_used=x-ai/grok-4.3 (retired slug + 2026-07-04 generation date) so the
  same mechanism reprices it. Team to be notified.
- azure-model-router (4803) and nadir-cascade-v2 (3101): provider=azure, NOT
  subject to the xAI redirect -> unchanged.

Leaderboard (accuracy held fixed, affected calls billed at grok-4.3):
- Cross-Router   76.12 -> 75.75  ($0.30 -> $0.40/1K)  stays RouteWorks#1
- vLLM-SR        75.30 -> 74.86  ($0.30 -> $0.42/1K)  RouteWorks#2 -> RouteWorks#3
- Nadir-Tumbler  75.17 -> 73.44  ($0.08 -> $0.37/1K)  RouteWorks#4 -> RouteWorks#5

Co-authored-by: Louie Lu <yl231@datalab2.cs.rice.edu>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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