ModelVerdict
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Comparison

Gemini 3.8 Flash vs Mistral Medium 3.5

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 extraction99.8% / 97.8%100.0% / 93.5%97.2% / 97.4%95.9% / 97.0%99.9% / 98.2%
Email triage98.7% / 94.9%99.2% / 94.5%98.4% / 92.7%——
Personal data detection99.7% / 99.7%99.5% / 99.8%99.7% / 100.0%——
Contract clauses99.9% / 98.1%100.0% / 100.0%99.9% / 97.1%——

Correct fields: Gemini 3.8 Flash / Mistral Medium 3.5; the better one in bold. Click a cell to see the details.

Invoice extraction · English (US) (150 documents)

Gemini 3.8 Flash is more accurate by 2.1 pp. Gemini 3.8 Flash is 1.1× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.8%97.8%
Error-free documents98%79%
Per 1,000 documents$3.84$4.37
To fix / 1,00020207
Speed (median)3.2 sec2.3 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Supplier100.0%100.0%
Supplier ID (EIN, IČO…)100.0%100.0%
Invoice number100.0%100.0%
Payment reference100.0%94.7%
Invoice date100.0%98.7%
Due date100.0%99.3%
Net by tax rate100.0%88.0%
Tax by rate100.0%98.7%
Total100.0%100.0%
Currency100.0%100.0%
Bank account98.0%96.0%

Documents where they differ

Invoice extraction · Czech (150 documents)

Gemini 3.8 Flash is more accurate by 6.5 pp. Gemini 3.8 Flash is 1.1× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields100.0%93.5%
Error-free documents99%63%
Per 1,000 documents$4.26$4.69
To fix / 1,0007367
Speed (median)3.5 sec2.6 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Supplier99.3%90.0%
Supplier ID (EIN, IČO…)100.0%87.3%
VAT ID100.0%85.3%
Invoice number100.0%99.3%
Payment reference100.0%95.3%
Invoice date100.0%88.7%
Tax point100.0%86.7%
Due date100.0%90.7%
Net by tax rate100.0%99.3%
Tax by rate100.0%98.7%
Total100.0%100.0%
Currency100.0%100.0%
Bank account100.0%94.0%

Documents where they differ

Invoice extraction · German (150 documents)

Mistral Medium 3.5 is more accurate by 0.1 pp. Mistral Medium 3.5 is 1.5× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields97.2%97.4%
Error-free documents96%75%
Per 1,000 documents$7.15$4.72
To fix / 1,00040253
Speed (median)4.7 sec2.5 sec
Valid answers97.3%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Supplier97.3%97.3%
Supplier ID (EIN, IČO…)97.3%98.7%
VAT ID96.7%96.0%
Invoice number97.3%100.0%
Payment reference97.3%92.7%
Invoice date97.3%98.0%
Tax point97.3%90.7%
Due date97.3%97.3%
Net by tax rate96.7%98.0%
Tax by rate97.3%100.0%
Total97.3%100.0%
Currency97.3%100.0%
Bank account97.3%97.3%

Documents where they differ

Invoice extraction · Spanish (100 documents)

Mistral Medium 3.5 is more accurate by 1.1 pp. Mistral Medium 3.5 is 1.7× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields95.9%97.0%
Error-free documents95%67%
Per 1,000 documents$7.86$4.75
To fix / 1,00050330
Speed (median)5.3 sec2.5 sec
Valid answers96.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Supplier95.0%99.0%
Supplier ID (EIN, IČO…)96.0%100.0%
VAT ID96.0%94.0%
Invoice number96.0%100.0%
Payment reference96.0%93.0%
Invoice date96.0%100.0%
Tax point96.0%93.0%
Due date96.0%97.0%
Net by tax rate96.0%85.0%
Tax by rate96.0%100.0%
Total96.0%100.0%
Currency96.0%100.0%
Bank account96.0%100.0%

Documents where they differ

Invoice extraction · French (100 documents)

Gemini 3.8 Flash is more accurate by 1.8 pp. Mistral Medium 3.5 is 1.3× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.9%98.2%
Error-free documents99%81%
Per 1,000 documents$6.18$4.81
To fix / 1,00010190
Speed (median)5.2 sec2.6 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Supplier100.0%99.0%
Supplier ID (EIN, IČO…)100.0%99.0%
VAT ID100.0%98.0%
Invoice number100.0%100.0%
Payment reference99.0%94.0%
Invoice date100.0%100.0%
Tax point100.0%100.0%
Due date100.0%100.0%
Net by tax rate100.0%95.0%
Tax by rate100.0%98.0%
Total100.0%99.0%
Currency100.0%96.0%
Bank account100.0%98.0%

Documents where they differ

Email triage · English (US) (150 documents)

Gemini 3.8 Flash is more accurate by 3.9 pp. Mistral Medium 3.5 is 1.6× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields98.7%94.9%
Error-free documents89%57%
Per 1,000 documents$2.39$1.47
To fix / 1,000113427
Speed (median)2.2 sec0.8 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Category100.0%100.0%
Priority100.0%63.3%
Sentiment88.7%90.7%
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

  • Cody Baldwin · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Danielle Little · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Russell Bates · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • Kyle Schwartz · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • James Arnold · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • Gene Everett · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • Dale Sanchez · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • Daniel Stewart · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9

Email triage · Czech (150 documents)

Gemini 3.8 Flash is more accurate by 4.7 pp. Mistral Medium 3.5 is 1.6× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.2%94.5%
Error-free documents93%55%
Per 1,000 documents$3.06$1.95
To fix / 1,00073447
Speed (median)2.6 sec0.8 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Category100.0%100.0%
Priority99.3%63.3%
Sentiment93.3%87.3%
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

Email triage · German (150 documents)

Gemini 3.8 Flash is more accurate by 5.6 pp. Mistral Medium 3.5 is 1.5× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields98.4%92.7%
Error-free documents85%48%
Per 1,000 documents$2.74$1.77
To fix / 1,000147520
Speed (median)2.9 sec0.8 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Category100.0%100.0%
Priority100.0%56.7%
Sentiment85.3%78.0%
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

  • Alexej Sauer · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Irmela Warmer · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Sibille Lehmann · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Ibrahim Walter · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Augusta Lange · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 7/9
  • Rolf-Peter Metz · Email · Gemini 3.8 Flash 8/9, Mistral Medium 3.5 7/9
  • Swantje Noack · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9
  • Rosemarie Steuer · Email · Gemini 3.8 Flash 9/9, Mistral Medium 3.5 8/9

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

Both are equally accurate. Mistral Medium 3.5 is 1.6× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.7%99.7%
Error-free documents98%98%
Per 1,000 documents$1.86$1.15
To fix / 1,0002020
Speed (median)1.9 sec0.8 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Names100.0%99.3%
Email addresses100.0%100.0%
Phone numbers100.0%100.0%
Addresses98.0%98.7%
Dates of birth100.0%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

  • Margaret Mills · Text · Gemini 3.8 Flash 7/7, Mistral Medium 3.5 6/7

Personal data detection · Czech (150 documents)

Mistral Medium 3.5 is more accurate by 0.3 pp. Mistral Medium 3.5 is 1.6× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.5%99.8%
Error-free documents97%99%
Per 1,000 documents$2.19$1.40
To fix / 1,0003313
Speed (median)2.0 sec0.8 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Names98.7%98.7%
Email addresses100.0%100.0%
Phone numbers100.0%100.0%
Addresses98.0%100.0%
Dates of birth100.0%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

Personal data detection · German (150 documents)

Mistral Medium 3.5 is more accurate by 0.3 pp. Mistral Medium 3.5 is 1.5× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.7%100.0%
Error-free documents98%100%
Per 1,000 documents$2.12$1.38
To fix / 1,000200
Speed (median)2.3 sec0.9 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Names100.0%100.0%
Email addresses100.0%100.0%
Phone numbers100.0%100.0%
Addresses98.0%100.0%
Dates of birth100.0%100.0%
National IDs100.0%100.0%
Bank accounts100.0%100.0%

Documents where they differ

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

Contract clauses · English (US) (150 documents)

Gemini 3.8 Flash is more accurate by 1.8 pp.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.9%98.1%
Error-free documents99%87%
Per 1,000 documents$2.47$2.35
To fix / 1,0007127
Speed (median)2.0 sec1.1 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Provider99.3%87.3%
Provider ID100.0%100.0%
Client99.3%88.7%
Client ID100.0%99.3%
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 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 · Czech (150 documents)

Both are equally accurate.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields100.0%100.0%
Error-free documents100%100%
Per 1,000 documents$3.09$3.06
To fix / 1,00000
Speed (median)2.2 sec1.2 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Provider100.0%100.0%
Provider ID100.0%100.0%
Client100.0%100.0%
Client ID100.0%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 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 · German (150 documents)

Gemini 3.8 Flash is more accurate by 2.8 pp. Mistral Medium 3.5 is 1.2× cheaper.

MetricGemini 3.8 FlashMistral Medium 3.5
Correct fields99.9%97.1%
Error-free documents99%75%
Per 1,000 documents$3.42$2.76
To fix / 1,0007247
Speed (median)2.6 sec1.2 sec
Valid answers100.0%100.0%

Accuracy per field

FieldGemini 3.8 FlashMistral Medium 3.5
Provider100.0%100.0%
Provider ID99.3%82.0%
Client100.0%100.0%
Client ID99.3%80.7%
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 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