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VECTOR WIREAI INTELLIGENCE
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DeepSeek-V4.1-Flash vs GLM-5.2

DeepSeek · released

Wins 7 of 7 areas

Coding · Agents · Reasoning · Facts · Math · Long documents · Following instructions

Z.ai · released

Wins 0 of 7 areas

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DeepSeek-V4.1-Flash is the stronger all-rounder.

Scores updated · 35 tests both models report · How we compare

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.

DeepSeek-V4.1-Flash$0.30 to read · $1.20 to write$1.50Price from Artificial Analysis
GLM-5.2$1.40 to read · $4.40 to write$5.80Price from Z.ai's own price page

DeepSeek-V4.1-Flash costs 74% less for the same work.

The biggest differences

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

Where DeepSeek-V4.1-Flash pulls ahead

  • Abstract visual puzzles that people can solveARC-AGI-2+55.3points aheadDeepSeek-V4.1-Flash78.1GLM-5.222.8
  • Complex command-line tasks across many fieldsTerminal-Bench 4.0+25.8points aheadDeepSeek-V4.1-Flash26.8GLM-5.21
  • Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+25.5points aheadDeepSeek-V4.1-Flash77.3GLM-5.251.8

Where GLM-5.2 pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+70.2points aheadGLM-5.273.7DeepSeek-V4.1-Flash3.5
  • Research-level physics problemsCritPt+6.6points aheadGLM-5.220.9DeepSeek-V4.1-Flash14.3
  • Very hard expert questions across many subjectsHumanity's Last Exam+1.9points aheadGLM-5.241.1DeepSeek-V4.1-Flash39.2

Every test, side by side

All 35 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingDeepSeek-V4.1-Flash

Full coding ranking

AgentsDeepSeek-V4.1-Flash
  • Terminal-Bench 4.0DeepSeek-V4.1-Flash by 25.826.81+25.8
  • GDPValDeepSeek-V4.1-Flash by 11.45543.6+11.4
  • AA IT-Bench SREDeepSeek-V4.1-Flash by 4.246.942.7+4.2

Full agents ranking

ReasoningDeepSeek-V4.1-Flash

Full reasoning ranking

FactsDeepSeek-V4.1-Flash

Full facts ranking

MathDeepSeek-V4.1-Flash

Full math ranking

Long documentsDeepSeek-V4.1-Flash
  • AA-LCRDeepSeek-V4.1-Flash by 5.78478.3+5.7

Full long documents ranking

Following instructionsDeepSeek-V4.1-Flash

Full following instructions ranking

Other results13 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, DeepSeek-V4.1-Flash or GLM-5.2?

DeepSeek-V4.1-Flash wins all seven areas where both have results: coding, agents, reasoning, facts, math, long documents and following instructions. GLM-5.2 wins none.

Which is better for coding?

DeepSeek-V4.1-Flash. It wins 3 of the 5 coding tests both models report; GLM-5.2 wins none, and 2 are ties.

Which is cheaper?

DeepSeek-V4.1-Flash costs $0.30 per million input tokens and $1.20 per million output tokens; GLM-5.2 costs $1.40 and $4.40. That makes DeepSeek-V4.1-Flash about 74% cheaper for the same work.

How do you compare the two?

We use the 35 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 13 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.