Browser, WebArena & Desktop Computer-Use Agent Evaluation
Benchmark web and desktop computer-use agents against realistic DOM/GUI tasks (WebArena, BrowserGym, OSWorld, VisualWebArena) with deterministic DOM/state checkpoints, session recordings, and step-budget limits.
At a glance — Oct 2026
Updated 2026-10-28 · forward this page: /jtbds/computer-use-browser-agent-evals#briefPromotion class: deterministic_source_reverified · 8.4 ± 0.5 (7.9–8.9 · editorial_prior) · Pricing verified 2026-10-21.
- Depot Pick
- Browserbase · 8.39/10 for this job (curated estimate, high confidence)
Browserbase provides deterministic headless Chromium sessions with Stagehand/Playwright control, full DOM/network/video session replay, and predictable concurrent session scaling ($20/mo Developer, $0.10–$0.12/browser-hr as of 2026-10-28) so WebArena and BrowserGym eval runs fail on agent mistakes rather than local browser flakes.
- Runner-up
- E2B · 8.63/10
Scores higher than the pick on: Capability fit, Price / performance, Privacy / data retention, Lock-in risk (higher = worse).
- When not to use the pick
- Need full desktop OS (Ubuntu/X11) sandboxes for OSWorld GUI pixel/mouse/keyboard tasks — E2B Desktop; self-hosted OSS browser fleet to run thousands of free local WebArena episodes — Steel.dev; real iOS/Android handsets for mobile agent QA — BrowserStack; high-level managed browser-agent loop — Browser Use Cloud.
- Lock-in / migration
- Runner-up E2B has lower stored lock-in risk (4 vs 5, 0–10, higher = more lock-in).
- Sourced price (no comparable unit)
Pick: no sourced price in this job's unit (no_matching_sourced_price).
No cheapest SKU (no_comparable_unit_for_job). No price was invented.
- Free option
- No free resource lists this job. A cheap paid SKU is not a free option.
- Failure modes to watch
- Runaway spend: Set a budget and a tool-call cap per task. Alert when spend jumps. Stop the run at the cap instead of summarizing a partial trace as success.
Cite: Agent Provider Depot, Depot Pick for computer-use-browser-agent-evals: browserbase, scores as of 2026-10-28. Agents: GET /api/decide?jtbd=computer-use-browser-agent-evals
Browserbase
Browserbase provides deterministic headless Chromium sessions with Stagehand/Playwright control, full DOM/network/video session replay, and predictable concurrent session scaling ($20/mo Developer, $0.10–$0.12/browser-hr as of 2026-10-28) so WebArena and BrowserGym eval runs fail on agent mistakes rather than local browser flakes.
Pricing (directional): Session-based cloud browsers; free/$20/$99/custom tiers; Playwright-compatible; recordings/stealth.
Top pick (8.39) and #2 runner-up (8.63) are separated by 0.24 points (<= 0.35 weight-sensitivity band). Treat them as co-picks and use the workload tie-breaker rule below rather than the raw composite decimal.
Workload Tie-Breaker Rule: Need full desktop OS (Ubuntu/X11) sandboxes for OSWorld GUI pixel/mouse/keyboard tasks — E2B Desktop; self-hosted OSS browser fleet to run thousands of free local WebArena episodes — Steel.dev; real iOS/Android handsets for mobile agent QA — BrowserStack; high-level managed browser-agent loop — Browser Use Cloud.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Depot default for agents that need a real browser. Pair with Stagehand/Browser Use for the reasoning loop.
Quote for Browser, WebArena & Desktop Computer-Use Agent Evaluation
Depot Pick stays Browserbase. Prices below are sourced SKU rows only (as of 2026-10-28). Input and output are not blended. GET /api/quote?jtbd=computer-use-browser-agent-evals
Nothing was compared. no comparable sourced unit for this job; chat input $/1M and other units were not borrowed pickIsPriceWinner is null.
- Developer browser hour overage usd_per_browser_hour $0.12 source as of 2026-10-28
- Developer plan usd_per_month $20 source as of 2026-10-28
- Fetch calls usd_per_1k_calls $1 source as of 2026-10-28
- Fetch calls with proxies usd_per_1k_calls $4 source as of 2026-10-28
- Search calls (default: Parallel Advanced) usd_per_1k_searches $5 source as of 2026-10-21
- Search calls (Exa) usd_per_1k_searches $7 source as of 2026-10-21
1 of 5 candidates have no sourced price row. 5 are excluded from the Matching price comparison (none). no comparable sourced unit for this job; chat input $/1M and other units were not borrowed
Runners-up
E2B
Depot default code sandbox for agents. Use for untrusted code; Daytona when you need persistent…
Steel.dev
Pick Steel when you need to self-host browsers or hate SaaS lock-in. Browserbase wins on polish.
Browser Use Cloud
Pick when you want an agent-native browser loop, not just a hosted Chromium. Browserbase still wins pure…
BrowserStack
Depot pick for mobile-computer-use on real phones. Cua if you only need Android VMs; AWS Device Farm if you…
When NOT to use the top pick
Need full desktop OS (Ubuntu/X11) sandboxes for OSWorld GUI pixel/mouse/keyboard tasks — E2B Desktop; self-hosted OSS browser fleet to run thousands of free local WebArena episodes — Steel.dev; real iOS/Android handsets for mobile agent QA — BrowserStack; high-level managed browser-agent loop — Browser Use Cloud.
Full ranking (score table)
Ranked with this JTBD's weights. Scores are curated estimates unless marked otherwise. Agents: prefer /api/decide then this table for tie-breaks.
| # | Provider | Overall | Fit | $/perf | Latency | DX | As of |
|---|---|---|---|---|---|---|---|
| 1 | E2B | 8.6 | 9.4 | 8.0 | 8.6 | 9.4 | 2026-10-28 |
| 2 | BrowserbaseDepot Pick | 8.4 | 9.2 | 7.5 | 8.8 | 9.4 | 2026-10-28 |
| 3 | Steel.dev | 8.3 | 8.6 | 8.5 | 8.0 | 8.6 | 2026-10-28 |
| 4 | BrowserStack | 8.0 | 9.0 | 6.2 | 9.0 | 8.0 | 2026-10-28 |
| 5 | Browser Use Cloud | 7.4 | 8.0 | 7.8 | 7.0 | 8.4 | 2026-10-28 |
Score methodology for this job
Scores session determinism, DOM/HAR trace capture for post-run grading, concurrency for parallel benchmark episodes, and clean teardown. Reference suites: WebArena (https://webarena.dev/), BrowserGym (https://github.com/ServiceNow/BrowserGym), and OSWorld (https://os-world.github.io/).
capabilityFit: 26%pricePerformance: 16%latencyReliability: 18%developerDx: 16%privacyPosture: 10%lockInRisk: 6%maturity: 8%