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Google Gemini 3 Flash Preview VS OpenAI GPT-5.5

Gemini 3 Flash Preview vs GPT-5.5: which wins at real work?

22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.

GPT-5.5 wins 16 of 22 task areas we tested; Gemini 3 Flash Preview takes 6. Gemini 3 Flash Preview costs 10.0× less per token ($3.5 vs $35 per 1M).

6
Task areas won
16
60
Avg percentile
86
1
Top-3 finishes
6
$3.5
Price / 1M tokens
$35.0
Google
Provider
OpenAI

Gemini 3 Flash Preview costs 10.0× less per token ($3.5 vs $35 per 1M).

Task by task

Task area Gemini 3 Flash Preview GPT-5.5 Winner
Executive Assistant #92 / 112
Usable
#11 / 112
Strong
GPT-5.5
Research & Competitive Analysis #71 / 110
Usable
#7 / 110
Excellent
GPT-5.5
Translation & Localization #67 / 110
Excellent
#3 / 110
Excellent
GPT-5.5
Product & Project Management #69 / 110
Strong
#8 / 110
Excellent
GPT-5.5
Training & Education #11 / 110
Excellent
#63 / 110
Excellent
Gemini 3 Flash Preview
Summarization & Meeting Notes #61 / 110
Excellent
#10 / 110
Excellent
GPT-5.5
Creative & Comedy #51 / 110 #2 / 110 GPT-5.5
Presentations & Decks #52 / 110
Excellent
#3 / 110
Excellent
GPT-5.5
Knowledge & Docs #49 / 110
Usable
#5 / 110
Excellent
GPT-5.5
Legal & HR #47 / 110
Excellent
#9 / 110
Excellent
GPT-5.5
Chef / Home Cooking #39 / 126
Usable
#4 / 126
Strong
GPT-5.5
Content & Brand #39 / 124
Strong
#4 / 124
Strong
GPT-5.5
Customer Support #34 / 113
Strong
#3 / 113
Strong
GPT-5.5
Investor & Pitch #47 / 66
Usable
#16 / 66
Strong
GPT-5.5
Structured Output #34 / 113
Excellent
#3 / 113
Excellent
GPT-5.5
Landing Pages #35 / 72
Strong
#9 / 72
Strong
GPT-5.5
AI Strategy #38 / 126
Strong
#62 / 126
Strong
Gemini 3 Flash Preview
Coding #22 / 115
Strong
#1 / 115
Excellent
GPT-5.5
Frontend & Landing Pages #1 / 109
Usable
#13 / 109
Needs editing
Gemini 3 Flash Preview
Sales #35 / 110
Usable
#42 / 110
Usable
Gemini 3 Flash Preview
RAG, Safety & Grounding #13 / 113
Excellent
#16 / 113
Excellent
Gemini 3 Flash Preview
Data & Analytics #47 / 110
Excellent
#48 / 110
Excellent
Gemini 3 Flash Preview

Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.

Frequently asked

Is Gemini 3 Flash Preview better than GPT-5.5?

Across 22 task areas we benchmarked, GPT-5.5 ranks higher in 16 and Gemini 3 Flash Preview in 6.

Which is cheaper, Gemini 3 Flash Preview or GPT-5.5?

Gemini 3 Flash Preview costs 10.0× less per token ($3.5 vs $35 per 1M).

What is Gemini 3 Flash Preview better at?

Gemini 3 Flash Preview out-ranks GPT-5.5 at Training & Education, AI Strategy, Frontend & Landing Pages.

What is GPT-5.5 better at?

GPT-5.5 out-ranks Gemini 3 Flash Preview at Executive Assistant, Research & Competitive Analysis, Translation & Localization.

Full Gemini 3 Flash Preview review → Full GPT-5.5 review → Full model leaderboard → Google vs OpenAI — every model, lab against lab →

More comparisons

This page is Spring Prompt, running in public

We just did this for every model. Do it for your prompt.

The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.

  • Generate test cases from your prompt — no eval set required to start.
  • Compare models side by side with quality, cost and latency in one matrix.
  • Optimise the winner until the scores say it's ready to ship.
Experiment · Cold outreach email

Prompt × model results

12 test cases · 3 evals
Claude Opus
GPT-5
Gemini
v1
7.1
6.8
7.4
v2
8.3
7.9
8.0
v3
9.2
8.6
8.4
Best combo: v3 × Claude Opus
9.2 quality · $0.004/run · 1.8s