GPT 5.5 (Pi)
high
Known corpus 41/86 47.7%
Total findings 72
Cost $148.63
Overview
The Sentry benchmark is a small, qualitative readout for Warden’s security
review behavior. It compares runs against known vulnerabilities from the public
getsentry/sentry repository.
This is not an exhaustive eval and it is not a proof that Warden will catch every future issue. It is a way to compare implementations, prompts, models, and runtimes against the same historical security corpus.
What It Is
Section titled “What It Is”The corpus currently contains 86 validated vulnerabilities across 79 files and 6 historical Sentry commits. A benchmark run checks out each commit and scans only the files tied to known vulnerabilities at that commit.
That keeps the run focused. We are measuring whether Warden can recognize the same root causes, not whether it can discover unrelated issues across the whole Sentry repository.
Comparison Matrix
Section titled “Comparison Matrix”The score table is the headline and sorts by known-corpus recall. The cost and timing tables show what each run costs to operate. This matrix only includes complete runs with no failed chunks and per-chunk timing data.
Run Known Findings Cost
GPT 5.5 (Pi)
low
Known corpus 28/86 32.6%
Total findings 38
Cost $39.36
Claude Sonnet 4.6 (Pi)
Known corpus 25/86 29.1%
Total findings 32
Cost $19.84
Claude Sonnet 4.6 (Claude SDK)
Known corpus 24/86 27.9%
Total findings 32
Cost $103.59
Claude Opus 4.6 (Pi)
high
Known corpus 23/86 26.7%
Total findings 24
Cost $36.86
DeepSeek V4 Pro (Pi)
xhigh
Known corpus 23/86 26.7%
Total findings 30
Cost $18.70
Claude Sonnet 5 (Pi)
Known corpus 22/86 25.6%
Total findings 27
Cost $23.46
Claude Opus 4.8 (Pi)
high
Known corpus 21/86 24.4%
Total findings 24
Cost $21.31
Claude Opus 4.8 (Pi)
medium
Known corpus 18/86 20.9%
Total findings 19
Cost $14.50
DeepSeek V4 Flash (Pi)
xhigh
Known corpus 18/86 20.9%
Total findings 27
Cost $10.11
Claude Opus 4.8 (Claude SDK)
high
Known corpus 17/86 19.8%
Total findings 17
Cost $79.56
Claude Opus 4.7 (Pi)
medium
Known corpus 6/86 7.0%
Total findings 7
Cost $4.39
Cost
Lowest cost first.
Run Cost Input Output
Claude Opus 4.7 (Pi)
medium
Cost $4.39
Input 1.53m
Output 20.77k
DeepSeek V4 Flash (Pi)
xhigh
Cost $10.11
Input 74.35m
Output 2.09m
Claude Opus 4.8 (Pi)
medium
Cost $14.50
Input 4.62m
Output 225.33k
DeepSeek V4 Pro (Pi)
xhigh
Cost $18.70
Input 65.51m
Output 1.85m
Claude Sonnet 4.6 (Pi)
Cost $19.84
Input 9.67m
Output 508.84k
Claude Opus 4.8 (Pi)
high
Cost $21.31
Input 6.52m
Output 376.36k
Claude Sonnet 5 (Pi)
Cost $23.46
Input 20.37m
Output 800.84k
Claude Opus 4.6 (Pi)
high
Cost $36.86
Input 16.14m
Output 585.84k
GPT 5.5 (Pi)
low
Cost $39.36
Input 18.71m
Output 390.01k
Claude Opus 4.8 (Claude SDK)
high
Cost $79.56
Input 31.84m
Output 386.17k
Claude Sonnet 4.6 (Claude SDK)
Cost $103.59
Input 65.67m
Output 1.09m
GPT 5.5 (Pi)
high
Cost $148.63
Input 127.9m
Output 986.84k
Timing
Lowest P50 chunk duration first.
Run P50 P90 Total
Claude Opus 4.7 (Pi)
medium
P50 1.2s
P90 9.6s
Total 6.6m
Claude Opus 4.8 (Pi)
medium
P50 11.9s
P90 51.7s
Total 42.4m
Claude Opus 4.8 (Pi)
high
P50 20.9s
P90 1.1m
Total 31.4m
Claude Opus 4.8 (Claude SDK)
high
P50 21.6s
P90 1.1m
Total 34.3m
GPT 5.5 (Pi)
low
P50 34.2s
P90 56.4s
Total 55.2m
Claude Sonnet 4.6 (Pi)
P50 41.9s
P90 1.9m
Total 53.6m
Claude Opus 4.6 (Pi)
high
P50 49.6s
P90 2.5m
Total 67.6m
Claude Sonnet 5 (Pi)
P50 1.0m
P90 3.8m
Total 88.8m
Claude Sonnet 4.6 (Claude SDK)
P50 1.9m
P90 26.6m
Total 448.4m
DeepSeek V4 Flash (Pi)
xhigh
P50 2.9m
P90 18.5m
Total 494.5m
GPT 5.5 (Pi)
high
P50 3.0m
P90 5.6m
Total 163.9m
DeepSeek V4 Pro (Pi)
xhigh
P50 3.8m
P90 19.3m
Total 1056.9m
Reading Results
Section titled “Reading Results”- Known is the headline score: corpus entries where scoring confirmed the same bug in roughly the same location.
- Findings is review volume before benchmark scoring. More findings can improve recall, but they also create more review work.
- Cost is the recorded provider cost for the run. It is not normalized pricing or cost per finding.
- P50 and P90 are per-analysis-chunk durations. Total includes verifier work, provider latency, queueing, retries, and runtime overhead.
- Scoring is semantic. Same-file findings about different bugs do not count, duplicates do not double-count, and one finding can cover multiple corpus entries when it catches the same root bug.
Analysis
Section titled “Analysis”Sonnet 5 High on Pi
Section titled “Sonnet 5 High on Pi”Sonnet 5 high found 22 of 86 known entries and emitted 27 findings. That makes it competitive, but not better than Sonnet 4.6 high on this corpus. It costs more than Sonnet 4.6 on Pi, emits fewer final findings, and trails Sonnet 4.6 by three known matches.
Sonnet 4.6: Claude SDK vs Pi
Section titled “Sonnet 4.6: Claude SDK vs Pi”This is the clearest runtime comparison. Pi found 25 of 86 known entries. The Claude SDK found 24 of 86. Both emitted 32 findings.
The quality result is close. The operating profile is not. Claude SDK recorded $103.59 total cost, compared to $19.84 for Pi. The trace summaries point to larger repeated context in Claude SDK runs, not a matching gain in recall.
Opus 4.8 High: Claude SDK vs Pi
Section titled “Opus 4.8 High: Claude SDK vs Pi”Pi found 21 of 86 known entries and emitted 24 findings. Claude SDK found 17 and emitted 17. Pi was also cheaper: $21.31 total versus $79.56.
The trace shape differs from Sonnet 4.6. Pi does more turns and more tool executions here, but each turn carries much less input context. Claude SDK’s extra cost is mostly context volume, not more tool fanout.
Opus 4.8 High vs Opus 4.6 High
Section titled “Opus 4.8 High vs Opus 4.6 High”The direct Pi comparison favors Opus 4.6 high on recall. Opus 4.6 found 23 of 86 known entries. Opus 4.8 found 21. Both emitted 24 findings.
Opus 4.8 is more selective under the current prompt and corpus. It exits more investigations earlier, which lowers cost and tool fanout, but it misses enough known vulnerabilities to trail Opus 4.6 here.
DeepSeek V4 XHigh
Section titled “DeepSeek V4 XHigh”DeepSeek V4 Pro found 23 of 86 known entries and emitted 30 findings. V4 Flash found 18 and emitted 27.
Flash is cheaper because the model price is lower, not because it does less work. It used more turns, more tool executions, and more scan input tokens than V4 Pro. The result is not just a cheaper Opus-shaped run; it explores much more context and lands on a different set of known findings.
Corpus
Section titled “Corpus”The Sentry vulnerability corpus lists the known issues used for scoring. Each entry includes the repository SHA, the affected file, a short vulnerability description, and the relevant code snippet.
Run It
Section titled “Run It”Use the running guide to reproduce the benchmark, add a new model run, and record sanitized result metadata.