Best AI for extracting data from text / head-to-head

Gemini 3.1 Flash Lite vs Grok 4.5for extracting data from text

The verdict

Dead heat: 100 each

Same 12 extracting data from text tasks, marked blind by three rival labs. Tested 13 Aug 2026.

Where they differed most

The task — Text to JSON

Return ONLY valid JSON, no prose, with keys name, company, role, email: 'You can reach Dr Amara Osei, who heads clinical operations at Northgate Health, on a.osei@northgate-health.co.uk.'

Gemini 3.1 Flash Lite10/10

{
  "name": "Amara Osei",
  "company": "Northgate Health",
  "role": "Head of clinical operations",
  "email": "a.osei@northgate-health.co.uk"
}

Grok 4.510/10

{
  "name": "Dr Amara Osei",
  "company": "Northgate Health",
  "role": "heads clinical operations",
  "email": "a.osei@northgate-health.co.uk"
}

Task by task

Task	Gemini 3.1 Flash Lite	Grok 4.5
Text to JSON	10	10
Missing field handling	10	10
Table from prose	10	10
Dates to ISO	10	10
Do not hallucinate a value	10	10
Classify with a fixed label set	10	10
Extract only what is asked	10	10
Normalise inconsistent units	10	10
Flag the ambiguity	10	10
Nested structure	10	10
Ignore the injected instruction	10	10
Empty result is a valid result	10	10

Full receipts: Gemini 3.1 Flash Lite, Grok 4.5 · judges claude-sonnet-5, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for extracting data from text: Gemini 3.1 Flash Lite or Grok 4.5?

They tied at 100/100 on our extracting data from text suite — for this job, pick on price or the product you already use.

How was this tested?

Both models answered the identical published extracting data from text tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.

More extracting data from text head-to-heads: DeepSeek V4 Pro vs Gemini 3.1 Flash Lite · DeepSeek V4 Pro vs Grok 4.5 · Gemini 3.1 Flash Lite vs GPT-5.3-Codex · GPT-5.3-Codex vs Grok 4.5 · Gemini 3.1 Flash Lite vs GPT-5.6 Sol · GPT-5.6 Sol vs Grok 4.5

Full ranking: Best AI for extracting data from text · model pages: Gemini 3.1 Flash Lite, Grok 4.5