OpenClaw A11y Snapshot vs Predicate Snapshot for LLM to reason

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 Running with A11Y approach
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[2026-02-25 02:23:31] Step 1: Wait for login form hydration
  Waiting for form to hydrate using runtime.check().eventually()...
  Button initially disabled: false
  PASS (12060ms) | Found 19 elements

[2026-02-25 02:23:43] Step 2: Fill username field
  Snapshot: 45 elements, 1241 tokens
  LLM chose element 37: "Username"
  PASS (7613ms) | Typed "testuser"
  Tokens: prompt=1241 total=1251

[2026-02-25 02:23:51] Step 3: Fill password field
  LLM chose element 42: "Password"
  Waiting for login button to become enabled...
  PASS (13691ms) | Button enabled: true
  Tokens: prompt=1295 total=1305

[2026-02-25 02:24:04] Step 4: Click login button
  LLM chose element 47: "Sign in"
  PASS (7909ms) | Navigated to https://www.localllamaland.com/profile
  Tokens: prompt=1367 total=1377

[2026-02-25 02:24:12] Step 5: Navigate to profile page
  PASS (1ms) | Already on profile page

[2026-02-25 02:24:12] Step 6: Extract username from profile
  Waiting for profile card to load...
  Found username: [email protected]
  Found email: [email protected]
  PASS (10401ms) | [email protected]
  Tokens: prompt=1433 total=1433

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 Running with PREDICATE approach
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[2026-02-25 02:24:23] Step 1: Wait for login form hydration
  Waiting for form to hydrate using runtime.check().eventually()...
  Button initially disabled: false
  PASS (10792ms) | Found 19 elements

[2026-02-25 02:24:34] Step 2: Fill username field
  Snapshot: 19 elements, 351 tokens
  LLM chose element 23: "username"
  PASS (12324ms) | Typed "testuser"
  Tokens: prompt=351 total=361

[2026-02-25 02:24:46] Step 3: Fill password field
  LLM chose element 25: "Password"
  Waiting for login button to become enabled...
  PASS (18410ms) | Button enabled: true
  Tokens: prompt=352 total=362

[2026-02-25 02:25:04] Step 4: Click login button
  LLM chose element 29: "Sign in"
  PASS (13233ms) | Navigated to https://www.localllamaland.com/profile
  Tokens: prompt=352 total=362

[2026-02-25 02:25:18] Step 5: Navigate to profile page
  PASS (0ms) | Already on profile page

[2026-02-25 02:25:18] Step 6: Extract username from profile
  Waiting for profile card to load...
  Found username: [email protected]
  Found email: Profile testuser [email protected]
  PASS (20796ms) | [email protected]
  Tokens: prompt=480 total=480

======================================================================
 RESULTS SUMMARY
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+-----------------------------------------------------------------------+
| Metric              | A11y Tree        | Predicate        | Delta     |
+-----------------------------------------------------------------------+
| Total Tokens        |             5366 |             1565 | -71%      |
| Total Latency (ms)  |            51675 |            75555 | +46%      |
| Steps Passed        |              6/6 |              6/6 |           |
+-----------------------------------------------------------------------+

Key Insight: Predicate snapshots use 71% fewer tokens
for a multi-step login workflow with form filling.

Step-by-step breakdown:
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Step 1: Wait for login form hydration
  A11y: 0 tokens, 12060ms, PASS
  Pred: 0 tokens, 10792ms, PASS (0% savings)
Step 2: Fill username field
  A11y: 1251 tokens, 7613ms, PASS
  Pred: 361 tokens, 12324ms, PASS (71% savings)
Step 3: Fill password field
  A11y: 1305 tokens, 13691ms, PASS
  Pred: 362 tokens, 18410ms, PASS (72% savings)
Step 4: Click login button
  A11y: 1377 tokens, 7909ms, PASS
  Pred: 362 tokens, 13233ms, PASS (74% savings)
Step 5: Navigate to profile page
  A11y: 0 tokens, 1ms, PASS
  Pred: 0 tokens, 0ms, PASS (0% savings)
Step 6: Extract username from profile
  A11y: 1433 tokens, 10401ms, PASS
  Pred: 480 tokens, 20796ms, PASS (67% savings)