Skip to content
VECTOR WIREAI INTELLIGENCE
⌘K
UTC
Models741Deals30d270Policy30d65, 13 pendingSources1,015

Gemini 3 Pro vs GLM-5.1

Google · released

Wins 3 of 7 areas

Reasoning · Facts · Long documents

Z.ai · released

Wins 3 of 7 areas

Coding · Agents · Following instructions

The two are evenly matched.Gemini 3 Pro is better at reasoning and facts; GLM-5.1 at coding and agents.

Scores updated · 37 tests both models report · How we compare

Where each one wins

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

Long documents and following instructions rest on a single test each.

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.

Gemini 3 Pro$2.00 to read · $12.00 to write$14Price from Artificial Analysis
GLM-5.1$1.38 to read · $4.40 to write$5.78Price from Artificial Analysis

GLM-5.1 costs 59% 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 Pro pulls ahead

  • Short factual questions, answered correctlySimpleQA Verified+38.9points aheadGemini 3 Pro72.9GLM-5.134
  • Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+32.1points aheadGemini 3 Pro55.8GLM-5.123.7
  • Common-sense trick questionsSimpleBench+21.3points aheadGemini 3 Pro76.4GLM-5.155.1

Where GLM-5.1 pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+61.6points aheadGLM-5.170.1Gemini 3 Pro8.5
  • Finds hard-to-locate facts by browsing the webBrowseComp+20.1points aheadGLM-5.179.3Gemini 3 Pro59.2
  • Multi-step tasks using many real software toolsMCP Atlas+17.7points aheadGLM-5.171.8Gemini 3 Pro54.1

Every test, side by side

All 37 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingGLM-5.1

Full coding ranking

AgentsGLM-5.1

Full agents ranking

ReasoningGemini 3 Pro

Full reasoning ranking

FactsGemini 3 Pro

Full facts ranking

MathEven

Full math ranking

Long documentsGemini 3 Pro
  • AA-LCRGemini 3 Pro by 2.37673.7+2.3

Full long documents ranking

Following instructionsGLM-5.1

Full following instructions ranking

Other results15 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, Gemini 3 Pro or GLM-5.1?

Gemini 3 Pro and GLM-5.1 each win three of the seven areas where both have results. Gemini 3 Pro wins reasoning, facts and long documents; GLM-5.1 wins coding, agents and following instructions. GLM-5.1 costs 59% less. They are level on math.

Which is better for coding?

GLM-5.1. It wins 4 of the 7 coding tests both models report; Gemini 3 Pro wins 2, and 1 is a tie.

Which is cheaper?

Gemini 3 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; GLM-5.1 costs $1.38 and $4.40. That makes GLM-5.1 about 59% cheaper for the same work.

How do you compare the two?

We use the 37 benchmark tests both models have published scores on. The verdict counts the 22 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 15 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 Gemini 3 Pro with

Google

Across the field

Compare GLM-5.1 with

Z.ai

Across the field

All comparisons