Disable stealth for browser throughput + latency benchmarks

[HeyGarrison]

Summary

• disable stealth for all browser throughput benchmark providers
• explicitly disable proxies for throughput session creation
• keep the shared 1920x1080 viewport and headless settings

Testing

• ./node_modules/typescript/bin/tsc --noEmit (fails: existing unrelated TypeScript errors in src/scale scripts and tigris sink)

[open-cla]

Contributor License Agreement

All contributors are covered by a CLA.

[github-actions]

Browser Throughput Benchmark Results

#	Provider	Score	APS (med)	Task (med)	Task (p95)	Screenshot	Status
1	Browseruse	72.1	4.00/s	2.50s	2.56s	245ms	3/3
2	Kernel	67.5	3.17/s	3.16s	3.45s	387ms	3/3
3	Hyperbrowser	63.9	2.54/s	3.94s	4.08s	491ms	3/3
4	Browserbase	58.5	1.90/s	5.25s	6.83s	359ms	3/3
5	Notte	53.7	1.52/s	6.59s	9.73s	834ms	3/3
6	Steel	51.6	1.20/s	8.36s	8.78s	655ms	3/3

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[github-actions]

Browser Benchmark Results

#	Provider	Score	Create	Connect	Navigate	Release	Total	Status
1	Kernel	96.9	0.02s	0.13s	0.18s	0.03s	0.35s	10/10
2	Browserbase	94.2	0.22s	0.13s	0.12s	0.13s	0.61s	10/10
3	Hyperbrowser	93.2	0.30s	0.15s	0.15s	0.09s	0.70s	10/10
4	Browseruse	91.7	0.61s	0.12s	0.06s	0.04s	0.87s	10/10
5	Notte	90.9	0.21s	0.51s	0.25s	0.11s	1.17s	10/10
6	Steel	64.9	0.56s	0.79s	0.12s	0.17s	3.80s	10/10

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[Copilot]

Pull request overview

This PR updates browser benchmark provider configurations to disable stealth mode, and for throughput benchmarks it also explicitly disables proxies while keeping a consistent headless 1920×1080 session setup.

Changes:

• Set stealth: false across throughput benchmark providers and add proxies: false for throughput session creation.
• Set stealth: false for the non-throughput browserProviders configurations as well.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/browser/throughput-providers.ts	Disables stealth and proxies for throughput sessions and keeps headless + consistent viewport.
src/browser/providers.ts	Disables stealth for non-throughput browser benchmark session creation options.

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