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Claude Opus 4.6 vs Gemini 3.1 Pro

Anthropic · released

Wins 0 of 8 areas

—

Google · released

Wins 6 of 8 areas

Agents · Reasoning · Facts · Images and charts · Math · Following instructions

Gemini 3.1 Pro is the stronger all-rounder.

Scores updated · 103 tests both models report · How we compare

Where each one wins

Tests won in each of the eight areas we test. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

Claude Opus 4.6$5.00 to read · $25.00 to write$30Price from Anthropic's own price page
Gemini 3.1 Pro$2.00 to read · $12.00 to write$14Price from Google's own price page

Gemini 3.1 Pro costs 53% less for the same work.

The biggest differences

The three tests each model wins by the widest margin. Scores are out of 100.

Where Gemini 3.1 Pro pulls ahead

  • Keeps track of context across a multi-turn chatMulti-Challenge+34.2points aheadGemini 3.1 Pro71.4Claude Opus 4.637.1
  • Short factual questions, answered correctlySimpleQA Verified+26.5points aheadGemini 3.1 Pro73.5Claude Opus 4.647
  • Follows unfamiliar, precisely checkable instructionsIFBench+24points aheadGemini 3.1 Pro77.1Claude Opus 4.653.1

Where Claude Opus 4.6 pulls ahead

  • Finds one of eight look-alike replies in a long chatMRCR v2 8 needle 128k (average)+57.7points aheadClaude Opus 4.684Gemini 3.1 Pro26.3
  • Real work tasks from 44 professionsGDPVal+41.2points aheadClaude Opus 4.655.9Gemini 3.1 Pro14.7
  • Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+6.3points aheadClaude Opus 4.666Gemini 3.1 Pro59.6

Every test, side by side

All 103 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingEven

Full coding ranking

AgentsGemini 3.1 Pro

Full agents ranking

ReasoningGemini 3.1 Pro

Full reasoning ranking

FactsGemini 3.1 Pro

Full facts ranking

Images and chartsGemini 3.1 Pro

Full images and charts ranking

MathGemini 3.1 Pro

Full math ranking

Long documentsEven

Full long documents ranking

Following instructionsGemini 3.1 Pro

Full following instructions ranking

Other results62 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, Claude Opus 4.6 or Gemini 3.1 Pro?

Gemini 3.1 Pro wins six of the eight areas we test: agents, reasoning, facts, images and charts, math and following instructions. Claude Opus 4.6 wins none. They are level on coding and long documents.

Which is better for coding?

Neither. They win 3 coding tests each of the 9 both models report, and 3 are ties.

Which is cheaper?

Claude Opus 4.6 costs $5.00 per million input tokens and $25.00 per million output tokens; Gemini 3.1 Pro costs $2.00 and $12.00. That makes Gemini 3.1 Pro about 53% cheaper for the same work.

How do you compare the two?

We use the 103 benchmark tests both models have published scores on. The verdict counts the 41 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 62 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.

Compare Claude Opus 4.6 with

Anthropic

Across the field

Compare Gemini 3.1 Pro with

Google

Across the field

All comparisons