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Google: Gemini 3 Flash Preview vs Z.ai: GLM 5.1

Summary

Gemini 3 Flash Preview vs GLM 5.1 benchmark comparison: Gemini 3 Flash Preview leads on average score with 9.6 vs 7.1. GLM 5.1 has the lower benchmark cost at $0.395 vs $0.667. Gemini 3 Flash Preview is faster at 18.64s vs 33.67s, with pass rates of 98.4% vs 68.3%.

Recommended model: Gemini 3 Flash Preview - It has the best score here (9.6), while responding about 1.8x faster than GLM 5.1.

Last updated at: 2026-07-02

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17 GLM 5.1 GLM 5.1 medium Release: 2026-04-07
Score 9.6 7.1
Rank #2 #66
Reliability 10.0 6.7
Consistency 9.7 8.3
Tests Correct
Attempt pass rate 98.4% 68.3%
Flaky tests 1 4
Total Runs 63 63
Cost per result 3.335 2.496
Total Cost $0.667 $0.395
Input Price $0.500 / 1M $0.975 / 1M
Output Price $3.000 / 1M $4.301 / 1M
Total Input Tokens 37,017 32,995
Output Tokens 2,006 11,655
Reasoning Tokens 214,153 75,421
Response Time (avg) 18.64s 33.67s
Response Time (max) 117.26s 172.60s
Response Time (total) 391.35s 673.41s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#2 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
17.9s
Tokens
3,236 tok

#66 GLM 5.1

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.88s 494 330 3,216
GLM 5.1 10.0 10.0 100.0% 0 8.31s 555 401 5,122
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084
GLM 5.1 4.6 3.7 44.5% 2 109.63s 5,702 4,871 37,826
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 22.42s 12,873 351 10,485
GLM 5.1 9.5 10.0 100.0% 0 43.11s 17,298 327 4,206
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.43s 7,548 279 4,893
GLM 5.1 10.0 10.0 100.0% 0 9.33s 7,107 991 4,552
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 15.27s 633 12 21,684
GLM 5.1 5.3 10.0 33.3% 0 29.77s 489 969 11,314
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.19s 486 72 1,905
GLM 5.1 10.0 10.0 100.0% 0 20.95s 477 2,875 2,875
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.04s 615 72 2,709
GLM 5.1 6.4 5.8 66.7% 1 7.47s 634 204 1,617
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.05s 558 183 4,365
GLM 5.1 8.2 7.2 88.9% 1 31.64s 609 935 5,730
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 12.60s 5,532 234 1,487
GLM 5.1 3.0 10.0 0.0% 0 0ms 0 0 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.50s 156 11 2,325
GLM 5.1 3.0 10.0 0.0% 0 29.40s 124 82 2,179

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