Comparing 2 models

Gemini 3.1 Pro Preview vs GLM 5.3 Flash

Benchmarks through

Verdict

Gemini 3.1 Pro Preview and GLM 5.3 Flash are not yet ranked on the same task, so compare the specifications below. GLM 5.3 Flash costs 82.3x less per input token. Only GLM 5.3 Flash has open weights for self-hosting.

  • Choose GLM 5.3 Flash for you need to self-host.

Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.

metric
Model 1Gemini 3.1 Pro Preview
Model 2GLM 5.3 Flash
Best for
Business Writing (#3)
High-Volume Extraction (#3)
Provider
google
z-ai
Context
1.0MBest
1.0MBest
Input / 1M
$2
$0.024Best
Output / 1M
$12
$0.90Best
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
—
yesBest
Released
Feb 18, 2026
Aug 21, 2026

Measured head to head

Benchmarks both models were run on

EvaluationGemini 3.1 Pro PreviewGLM 5.3 FlashSource
Design Arena Coding1233 Elo1285 Elosource · 2026-10-16
Design Arena UI1226 Elo1318 Elosource · 2026-10-16
Design Arena Website1235 Elo1274 Elosource · 2026-10-16
FrontierMath Tiers 1-3 (Epoch AI)59.6% ± 2.955.8% ± 2.9source · 2026-06-11
GPQA Diamond (Epoch AI)94.4% ± 1.690.2% ± 1.7source · 2026-08-06
GPQA Diamond (Epoch AI)94.1% ± 1.790.2% ± 1.7source · 2026-02-20
LiveBench Agentic Coding44.1%56.8%source · 2026-10-16
LiveBench Coding76.5%79.0%source · 2026-10-16
LiveBench Data Analysis78.5%76.4%source · 2026-10-16
LiveBench Instruction Following79.1%52.8%source · 2026-10-16
LiveBench Language85.4%77.3%source · 2026-10-16
LiveBench Math91.0%81.2%source · 2026-10-16
LiveBench Reasoning84%77.6%source · 2026-10-16
LMArena Agent-3.5-1.1source · 2026-10-14
LMArena Agent Bash Recovery-23.3-5.7source · 2026-10-08
LMArena Agent Steerability-6.2-3source · 2026-10-14
LMArena Agent Task Outcome-10.13.9source · 2026-10-14
LMArena Agent Tool Hallucination-0.20.6source · 2026-10-14
LMArena Creative Writing1482 Elo1441 Elosource · 2026-10-15
LMArena Instruction Following1466 Elo1478 Elosource · 2026-10-15
LMArena Long Query1483 Elo1482 Elosource · 2026-10-15
LMArena Math1485 Elo1505 Elosource · 2026-10-15
LMArena Text1487 Elo1474 Elosource · 2026-10-15
LMArena Text Factuality1472 Elo1463 Elosource · 2026-10-15
LMArena Vision1280 Elo1273 Elosource · 2026-10-09
LMArena Vision Diagrams1309 Elo1306 Elosource · 2026-10-09
LMArena Vision OCR1294 Elo1284 Elosource · 2026-10-09
LMArena WebDev1447 Elo1606 Elosource · 2026-10-13
LMArena WebDev Image-to-Web1481 Elo1581 Elosource · 2026-10-09
OTIS Mock AIME (Epoch AI)95.6% ± 3.193.9% ± 2.2source · 2026-08-06
OTIS Mock AIME (Epoch AI)95.6% ± 3.193.9% ± 2.2source · 2026-02-20

Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.