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Anthropic Claude Opus 4.6 VS Google Gemini 3.1 Flash Lite

Claude Opus 4.6 vs Gemini 3.1 Flash Lite: 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.

Claude Opus 4.6 wins 15 of 22 task areas we tested; Gemini 3.1 Flash Lite takes 7. Gemini 3.1 Flash Lite costs 17.1× less per token ($1.75 vs $30 per 1M).

15
Task areas won
7
74
Avg percentile
53
2
Top-3 finishes
0
$30.0
Price / 1M tokens
$1.75
Anthropic
Provider
Google

Gemini 3.1 Flash Lite costs 17.1× less per token ($1.75 vs $30 per 1M).

Task by task

Task area Claude Opus 4.6 Gemini 3.1 Flash Lite Winner
Executive Assistant #18 / 112
Strong
#101 / 112
Usable
Claude Opus 4.6
Legal & HR #8 / 110
Excellent
#86 / 110
Strong
Claude Opus 4.6
Creative & Comedy #10 / 110 #85 / 110 Claude Opus 4.6
Sales #4 / 110
Strong
#67 / 110
Usable
Claude Opus 4.6
Structured Output #98 / 113
Strong
#36 / 113
Excellent
Gemini 3.1 Flash Lite
Chef / Home Cooking #12 / 126
Strong
#70 / 126
Usable
Claude Opus 4.6
AI Strategy #5 / 126
Strong
#54 / 126
Strong
Claude Opus 4.6
Frontend & Landing Pages #51 / 109
Needs editing
#10 / 109
Usable
Gemini 3.1 Flash Lite
Coding #18 / 115
Excellent
#58 / 115
Strong
Claude Opus 4.6
Translation & Localization #2 / 110
Excellent
#39 / 110
Excellent
Claude Opus 4.6
Investor & Pitch #8 / 66
Strong
#44 / 66
Usable
Claude Opus 4.6
Data & Analytics #10 / 110
Excellent
#44 / 110
Excellent
Claude Opus 4.6
Knowledge & Docs #66 / 110
Usable
#33 / 110
Strong
Gemini 3.1 Flash Lite
Training & Education #1 / 110
Excellent
#33 / 110
Excellent
Claude Opus 4.6
Content & Brand #14 / 124
Strong
#43 / 124
Strong
Claude Opus 4.6
Customer Support #81 / 113
Usable
#54 / 113
Strong
Gemini 3.1 Flash Lite
Research & Competitive Analysis #29 / 110
Strong
#56 / 110
Usable
Claude Opus 4.6
Presentations & Decks #54 / 110
Excellent
#80 / 110
Strong
Claude Opus 4.6
Summarization & Meeting Notes #34 / 110
Excellent
#13 / 110
Excellent
Gemini 3.1 Flash Lite
Landing Pages #23 / 72
Strong
#43 / 72
Strong
Claude Opus 4.6
Product & Project Management #45 / 110
Strong
#29 / 110
Excellent
Gemini 3.1 Flash Lite
RAG, Safety & Grounding #59 / 113
Excellent
#58 / 113
Excellent
Gemini 3.1 Flash Lite

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

Frequently asked

Is Claude Opus 4.6 better than Gemini 3.1 Flash Lite?

Across 22 task areas we benchmarked, Claude Opus 4.6 ranks higher in 15 and Gemini 3.1 Flash Lite in 7.

Which is cheaper, Claude Opus 4.6 or Gemini 3.1 Flash Lite?

Gemini 3.1 Flash Lite costs 17.1× less per token ($1.75 vs $30 per 1M).

What is Claude Opus 4.6 better at?

Claude Opus 4.6 out-ranks Gemini 3.1 Flash Lite at Executive Assistant, Legal & HR, Creative & Comedy.

What is Gemini 3.1 Flash Lite better at?

Gemini 3.1 Flash Lite out-ranks Claude Opus 4.6 at Structured Output, Frontend & Landing Pages, Knowledge & Docs.

Full Claude Opus 4.6 review → Full Gemini 3.1 Flash Lite review → Full model leaderboard → Anthropic vs Google — 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