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VECTOR WIREAI INTELLIGENCE
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Gemini 3.5 Flash vs GLM-5.2

Google · released

Wins 3 of 7 areas

Reasoning · Facts · Following instructions

Z.ai · released

Wins 3 of 7 areas

Coding · Math · Long documents

The two are evenly matched.Gemini 3.5 Flash is better at reasoning and following instructions; GLM-5.2 at coding and math.

Scores updated · 44 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 rests on a single test.

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 3.5 Flash$1.50 to read · $9.00 to write$11Price from Artificial Analysis
GLM-5.2$1.40 to read · $4.40 to write$5.80Price from Z.ai's own price page

GLM-5.2 costs 45% 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 3.5 Flash pulls ahead

  • Abstract visual puzzles that people can solveARC-AGI-2+49.3points aheadGemini 3.5 Flash72.1GLM-5.222.8
  • Short factual questions, answered correctlySimpleQA Verified+32points aheadGemini 3.5 Flash66.2GLM-5.234.2
  • Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+27.1points aheadGemini 3.5 Flash51.4GLM-5.224.3

Where GLM-5.2 pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+35.9points aheadGLM-5.273.7Gemini 3.5 Flash37.8
  • Hard command-line tasks in a real terminalTerminal-Bench Hard+9.9points aheadGLM-5.250.8Gemini 3.5 Flash40.9
  • Real work tasks from 44 professionsGDPVal+8.5points aheadGLM-5.243.7Gemini 3.5 Flash35.2

Every test, side by side

All 44 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingGLM-5.2

Full coding ranking

AgentsEven

Full agents ranking

ReasoningGemini 3.5 Flash

Full reasoning ranking

FactsGemini 3.5 Flash

Full facts ranking

MathGLM-5.2

Full math ranking

Long documentsGLM-5.2

Full long documents ranking

Following instructionsGemini 3.5 Flash

Full following instructions ranking

Other results14 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 3.5 Flash or GLM-5.2?

Gemini 3.5 Flash and GLM-5.2 each win three of the seven areas where both have results. Gemini 3.5 Flash wins reasoning, facts and following instructions; GLM-5.2 wins coding, math and long documents. GLM-5.2 costs 45% less. They are level on agents.

Which is better for coding?

GLM-5.2. It wins 5 of the 7 coding tests both models report; Gemini 3.5 Flash wins 1, and 1 is a tie.

Which is cheaper?

Gemini 3.5 Flash costs $1.50 per million input tokens and $9.00 per million output tokens; GLM-5.2 costs $1.40 and $4.40. That makes GLM-5.2 about 45% cheaper for the same work.

How do you compare the two?

We use the 44 benchmark tests both models have published scores on. The verdict counts the 30 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 14 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 3.5 Flash with

Google

Across the field

Compare GLM-5.2 with

Z.ai

Across the field

All comparisons