ModelVerdict

Comparison

Gemini 3.5 Flash Lite vs Gemma 4 31B

Same documents, same prompt: where each model is right, what it really costs and how fast it answers.

At a glance

Task · documentsEnglish (US)CzechGermanSpanishFrench
Invoice extraction99.2% / 97.6%99.5% / 96.1%100.0% / 94.9%98.2% / 95.4%98.7% / 93.6%
Email triage96.3% / 96.5%95.8% / 97.1%94.7% / 95.1%——
Personal data detection99.5% / 99.9%98.1% / 99.8%99.6% / 99.9%——
Contract clauses100.0% / 99.6%99.9% / 100.0%98.0% / 94.4%——

Correct fields: Gemini 3.5 Flash Lite / Gemma 4 31B; the better one in bold. Click a cell to see the details.

Invoice extraction · English (US) (150 documents)

Gemini 3.5 Flash Lite is more accurate by 1.6 pp. Gemma 4 31B is 5.2× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields99.2%97.6%
Error-free documents92%81%
Per 1,000 documents$0.87$0.17
To fix / 1,00080187
Speed (median)1.7 sec8.9 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Supplier100.0%99.3%
Supplier ID (EIN, IČO…)100.0%98.0%
Invoice number100.0%100.0%
Payment reference96.7%99.3%
Invoice date97.3%98.7%
Due date99.3%98.7%
Net by tax rate98.0%95.3%
Tax by rate100.0%98.7%
Total100.0%100.0%
Currency100.0%100.0%
Bank account100.0%86.0%

Documents where they differ

Invoice extraction · Czech (150 documents)

Gemini 3.5 Flash Lite is more accurate by 3.4 pp. Gemma 4 31B is 4.9× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields99.5%96.1%
Error-free documents93%67%
Per 1,000 documents$1.03$0.21
To fix / 1,00067333
Speed (median)1.8 sec10.4 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Supplier100.0%96.7%
Supplier ID (EIN, IČO…)100.0%93.3%
VAT ID100.0%96.7%
Invoice number100.0%100.0%
Payment reference95.3%96.0%
Invoice date100.0%96.0%
Tax point100.0%95.3%
Due date100.0%94.0%
Net by tax rate100.0%98.0%
Tax by rate100.0%97.3%
Total100.0%99.3%
Currency98.7%100.0%
Bank account99.3%86.7%

Documents where they differ

Invoice extraction · German (150 documents)

Gemini 3.5 Flash Lite is more accurate by 5.1 pp. Gemma 4 31B is 5.2× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields100.0%94.9%
Error-free documents100%64%
Per 1,000 documents$1.03$0.20
To fix / 1,0000360
Speed (median)1.5 sec7.7 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Supplier100.0%98.7%
Supplier ID (EIN, IČO…)100.0%99.3%
VAT ID100.0%94.0%
Invoice number100.0%99.3%
Payment reference100.0%98.7%
Invoice date100.0%87.3%
Tax point100.0%92.0%
Due date100.0%90.7%
Net by tax rate100.0%94.7%
Tax by rate100.0%97.3%
Total100.0%99.3%
Currency100.0%99.3%
Bank account100.0%82.7%

Documents where they differ

Invoice extraction · Spanish (100 documents)

Gemini 3.5 Flash Lite is more accurate by 2.8 pp. Gemma 4 31B is 5.1× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields98.2%95.4%
Error-free documents79%54%
Per 1,000 documents$1.05$0.20
To fix / 1,000210460
Speed (median)1.6 sec8.7 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Supplier98.0%95.4%
Supplier ID (EIN, IČO…)100.0%93.1%
VAT ID83.0%98.9%
Invoice number100.0%100.0%
Payment reference99.0%95.4%
Invoice date99.0%98.9%
Tax point98.0%100.0%
Due date100.0%97.7%
Net by tax rate100.0%81.6%
Tax by rate100.0%100.0%
Total100.0%100.0%
Currency100.0%100.0%
Bank account100.0%79.3%

Documents where they differ

Invoice extraction · French (100 documents)

Gemini 3.5 Flash Lite is more accurate by 5.1 pp. Gemma 4 31B is 4.8× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields98.7%93.6%
Error-free documents85%51%
Per 1,000 documents$1.07$0.22
To fix / 1,000150494
Speed (median)1.5 sec7.2 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Supplier98.0%96.6%
Supplier ID (EIN, IČO…)100.0%77.0%
VAT ID100.0%95.4%
Invoice number99.0%97.7%
Payment reference91.0%96.6%
Invoice date98.0%96.6%
Tax point98.0%94.3%
Due date100.0%96.6%
Net by tax rate100.0%93.1%
Tax by rate100.0%100.0%
Total100.0%100.0%
Currency100.0%98.9%
Bank account99.0%73.6%

Documents where they differ

Email triage · English (US) (150 documents)

Gemma 4 31B is more accurate by 0.2 pp. Gemma 4 31B is 3.5× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields96.3%96.5%
Error-free documents69%72%
Per 1,000 documents$0.42$0.12
To fix / 1,000313280
Speed (median)0.7 sec2.2 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Category100.0%100.0%
Priority84.0%85.3%
Sentiment82.7%83.3%
Customer name100.0%100.0%
Order number100.0%100.0%
Invoice number100.0%100.0%
Amount100.0%100.0%
Currency100.0%100.0%
Deadline100.0%100.0%

Documents where they differ

  • Daniel Stewart · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 7/9
  • Allison Floyd · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 7/9
  • Robert Lewis · Email · Gemini 3.5 Flash Lite 7/9, Gemma 4 31B 9/9
  • Luke Sims · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Russell Bates · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Jane Rubio · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Gene Everett · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 8/9
  • Jason Davis · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 8/9

Email triage · Czech (150 documents)

Gemma 4 31B is more accurate by 1.3 pp. Gemma 4 31B is 3.2× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields95.8%97.1%
Error-free documents64%75%
Per 1,000 documents$0.51$0.16
To fix / 1,000360253
Speed (median)0.7 sec2.5 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Category100.0%100.0%
Priority80.0%85.3%
Sentiment84.0%88.7%
Customer name98.0%100.0%
Order number100.0%100.0%
Invoice number100.0%100.0%
Amount100.0%100.0%
Currency100.0%100.0%
Deadline100.0%100.0%

Documents where they differ

Email triage · German (150 documents)

Gemma 4 31B is more accurate by 0.4 pp. Gemma 4 31B is 3.2× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields94.7%95.1%
Error-free documents57%62%
Per 1,000 documents$0.48$0.15
To fix / 1,000433380
Speed (median)0.8 sec3.6 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Category100.0%100.0%
Priority76.0%78.0%
Sentiment76.7%78.0%
Customer name99.3%100.0%
Order number100.0%100.0%
Invoice number100.0%100.0%
Amount100.0%100.0%
Currency100.0%100.0%
Deadline100.0%100.0%

Documents where they differ

  • Swantje Noack · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Alexej Sauer · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 7/9
  • Raymund Weiß · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Benedikt Speer · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 8/9
  • Roselinde Heinz · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 8/9
  • Linda Bähr · Email · Gemini 3.5 Flash Lite 9/9, Gemma 4 31B 8/9
  • Sibille Lehmann · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9
  • Helen Noack · Email · Gemini 3.5 Flash Lite 8/9, Gemma 4 31B 9/9

Personal data detection · English (US) (150 documents)

Gemma 4 31B is more accurate by 0.4 pp. Gemma 4 31B is 4.8× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields99.5%99.9%
Error-free documents97%99%
Per 1,000 documents$0.41$0.08
To fix / 1,000277
Speed (median)0.8 sec2.4 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Names100.0%100.0%
Email addresses99.3%100.0%
Phone numbers100.0%100.0%
Addresses98.7%99.3%
Dates of birth98.7%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

Personal data detection · Czech (150 documents)

Gemma 4 31B is more accurate by 1.7 pp. Gemma 4 31B is 3.8× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields98.1%99.8%
Error-free documents88%99%
Per 1,000 documents$0.45$0.12
To fix / 1,00012013
Speed (median)0.8 sec2.9 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Names91.3%100.0%
Email addresses100.0%100.0%
Phone numbers100.0%100.0%
Addresses99.3%98.7%
Dates of birth96.0%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

Personal data detection · German (150 documents)

Gemma 4 31B is more accurate by 0.3 pp. Gemma 4 31B is 4.5× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields99.6%99.9%
Error-free documents97%99%
Per 1,000 documents$0.45$0.10
To fix / 1,000277
Speed (median)0.8 sec1.9 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Names97.3%100.0%
Email addresses100.0%100.0%
Phone numbers100.0%100.0%
Addresses100.0%99.3%
Dates of birth100.0%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

  • Rosi Karz · Text · Gemini 3.5 Flash Lite 6/7, Gemma 4 31B 7/7
  • Gunnar Zorbach · Text · Gemini 3.5 Flash Lite 7/7, Gemma 4 31B 6/7
  • Fritz Rogner · Text · Gemini 3.5 Flash Lite 6/7, Gemma 4 31B 7/7

Contract clauses · English (US) (150 documents)

Gemini 3.5 Flash Lite is more accurate by 0.3 pp. Gemma 4 31B is 3.8× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields100.0%99.6%
Error-free documents99%97%
Per 1,000 documents$0.69$0.18
To fix / 1,000727
Speed (median)1.0 sec2.5 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Provider100.0%98.0%
Provider ID100.0%100.0%
Client100.0%98.0%
Client ID100.0%100.0%
Contract type99.3%100.0%
Price (net)100.0%100.0%
Currency100.0%100.0%
Billing period100.0%100.0%
Effective date100.0%99.3%
End date100.0%100.0%
Notice period (months)100.0%100.0%
Late-payment penalty (% per day)100.0%100.0%
Governing law100.0%100.0%

Documents where they differ

Both models got the same number of fields right on every example document.

Contract clauses · Czech (150 documents)

Gemma 4 31B is more accurate by 0.1 pp. Gemma 4 31B is 3.4× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields99.9%100.0%
Error-free documents98%99%
Per 1,000 documents$0.85$0.25
To fix / 1,000207
Speed (median)0.9 sec6.0 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Provider99.3%100.0%
Provider ID100.0%100.0%
Client99.3%100.0%
Client ID100.0%100.0%
Contract type99.3%100.0%
Price (net)100.0%100.0%
Currency100.0%100.0%
Billing period100.0%100.0%
Effective date100.0%99.3%
End date100.0%100.0%
Notice period (months)100.0%100.0%
Late-payment penalty (% per day)100.0%100.0%
Governing law100.0%100.0%

Documents where they differ

Contract clauses · German (150 documents)

Gemini 3.5 Flash Lite is more accurate by 3.6 pp. Gemma 4 31B is 3.6× cheaper.

MetricGemini 3.5 Flash LiteGemma 4 31B
Correct fields98.0%94.4%
Error-free documents84%27%
Per 1,000 documents$0.79$0.22
To fix / 1,000160727
Speed (median)1.0 sec2.6 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.5 Flash LiteGemma 4 31B
Provider100.0%100.0%
Provider ID86.0%100.0%
Client100.0%100.0%
Client ID88.7%100.0%
Contract type100.0%100.0%
Price (net)100.0%100.0%
Currency100.0%100.0%
Billing period100.0%100.0%
Effective date100.0%100.0%
End date99.3%100.0%
Notice period (months)100.0%100.0%
Late-payment penalty (% per day)100.0%27.3%
Governing law100.0%100.0%

Documents where they differ