Pairwise benchmark snapshot · Aug 16, 2026

Gemini 2.5 Flash vs GLM-5.2 benchmark

Name: Gemini 2.5 Flash vs GLM-5.2 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Gemini 2.5 Flash (Google) and GLM-5.2 (Zhipu) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, GLM-5.2 is ahead by 197 points (1,492 vs 1,295; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, GLM-5.2 resolves 69.3% versus 48% (seed-bootstrap (Aug 1, 2026)). Gemini 2.5 Flash streams faster (185 tok/s) while GLM-5.2 is the cheaper output token ($0.97/1M). Gemini 2.5 Flash has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Google

Gemini 2.5 Flash

Previous Google speed workhorse.

Elo 1,295$2.5/1M out

Zhipu

GLM-5.2

Zhipu flagship. Strong Chinese/English coding and agents.

Elo 1,492$0.9680000000000001/1M out

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Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 2.5 Flash (3)vsGLM-5.2 (6)

Gemini 2.5 Flash: 3W (33%)Overall: GLM-5.2GLM-5.2: 6W (67%)

← Gemini 2.5 Flash1 tiesGLM-5.2 →

GLM-5.2 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,295vs1,492

Coding Elo

—vs1,504

SWE-bench

48%vs69.3%

LiveBench

51.4%vs65.2%

GPQA Diamond

68.2%vs79.5%

Gemini 2.5 Flash: 0WGLM-5.2: 5W

Gemini 2.5 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

185 tok/svs84 tok/s

Time to first token

110 msvs270 ms

Gemini 2.5 Flash: 2WGLM-5.2: 0W

Tied (1/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$2.5/1Mvs$0.97/1M

Input price

$0.3/1Mvs$0.31/1M

Context window

1Mvs1M

Gemini 2.5 Flash: 1WGLM-5.2: 1W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageGLM-5.2 4/6

Preference Elo

GLM-5.2

197 pts advantage

Throughput Speed

Gemini 2.5 Flash

101 tok/s faster

Price Efficiency

GLM-5.2

$1.53/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,295

EloHigh is better

1,492+15%

Code Elo

High is better

—

Code EloHigh is better

1,504

LiveBench

High is better

51.4%

LiveBenchHigh is better

65.2%+27%

SWE-bench

High is better

48%

SWE-benchHigh is better

69.3%+44%

GPQA

High is better

68.2%

GPQAHigh is better

79.5%+17%

TTFT

Low is better

+145%110 ms

TTFTLow is better

270 ms

Speed

High is better

+120%185 tok/s

SpeedHigh is better

84 tok/s

In $

Low is better

+3%$0.3/1M

In $Low is better

$0.31/1M

Out $

Low is better

$2.5/1M

Out $Low is better

$0.97/1M+158%

Context

High is better

ContextHigh is better

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 47% with GLM-5.2

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Gemini 2.5 Flash$48.00 / mo

In: $10.50Out: $37.50

GLM-5.2$25.30 / mo

In: $10.78Out: $14.52

Estimated Cost Delta

GLM-5.2 is estimated to save $22.70/month ($272/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
GLM-5.2:Pick GLM-5.2 when repo-level coding accuracy is the constraint.
2
Gemini 2.5 Flash:Pick Gemini 2.5 Flash when time-to-first-token matters more than peak Elo.
3
Gemini 2.5 Flash:Pick Gemini 2.5 Flash for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsGLM-5.2

Higher SWE-bench (69.3%).

High-volume chatGLM-5.2

Lower output list price ($0.97/1M).

Voice / low-latency UIGemini 2.5 Flash

Lower TTFT (110 ms).

Long-document RAGGemini 2.5 Flash

Larger window (1M).

Screenshots / visionGLM-5.2

Both accept images. Defaulting to the higher-Elo side (GLM-5.2).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GLM-5.2	Higher SWE-bench (69.3%).
High-volume chat	GLM-5.2	Lower output list price ($0.97/1M).
Voice / low-latency UI	Gemini 2.5 Flash	Lower TTFT (110 ms).
Long-document RAG	Gemini 2.5 Flash	Larger window (1M).
Screenshots / vision	GLM-5.2	Both accept images. Defaulting to the higher-Elo side (GLM-5.2).

Related Editorial Dispatches & Benchmark Notes

View all news

newsAug 16, 2026

GLM-5.2 vs GLM 5V Turbo Price and SWE-bench 2026

GLM-5.2 undercuts GLM 5V Turbo by 74.2% on input at $0.31/1M, with 1,492 Elo and 69.3% SWE-bench in dated 2026 snapshots.

launchJun 18, 2026

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Strong Chinese/English coding. 5.3 is the new row; 5.2 stays so the delta is visible.

launchMar 25, 2025

Gemini 2.5 Flash: previous Google speed workhorse, still a baseline

Useful as a cheap historical compare. 3.7 Flash is the 2026 volume SKU.

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LIVE

Google

Gemini 2.5 Flash

Elo 1,295

LiveBench51.4%

SWE-bench48%

Speed185 tok/s

Output cost$2.5/1M

Zhipu

GLM-5.2

Elo 1,492

LiveBench65.2%

SWE-bench69.3%

Speed84 tok/s

Output cost$0.97/1M

Frequently Asked Questions

Which is better overall, Gemini 2.5 Flash or GLM-5.2?: GLM-5.2 has the higher preference Elo in our latest snapshot (1,492). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 2.5 Flash or GLM-5.2?: GLM-5.2 leads SWE-bench at 69.3% vs 48%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: GLM-5.2 output tokens are $0.97/1M versus $2.5/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 2.5 Flash or GLM-5.2?: Gemini 2.5 Flash has the lower time-to-first-token (110 ms vs 270 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Gemini 2.5 Flash accepts 1M tokens versus 1M.
Can I self-host either model?: GLM-5.2 is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 2.5 Flash and GLM-5.2 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Gemini 2.5 Flash matchups →|All GLM-5.2 matchups →

Gemini 2.5 Flash vs Gemini 2.0 Flash Thinking (previous gemini-flash)Gemini 2.5 Flash vs Gemini 3 Flash (next gemini-flash)GLM-5.2 vs GLM-5.3 (next glm)Gemini 3 Pro vs GLM-5.2 Gemini 3 Flash vs GLM-5.2 Gemini 2.0 Flash Thinking vs GLM-5.2

Gemini 2.5 Flash vs GLM-5.2 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 2.5 Flash (3)vsGLM-5.2 (6)

Gemini 2.5 Flash: 3W (33%)Overall: GLM-5.2GLM-5.2: 6W (67%)

← Gemini 2.5 Flash1 tiesGLM-5.2 →

GLM-5.2 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,295vs1,492

Coding Elo

—vs1,504

SWE-bench

48%vs69.3%

LiveBench

51.4%vs65.2%

GPQA Diamond

68.2%vs79.5%

Gemini 2.5 Flash: 0WGLM-5.2: 5W

Gemini 2.5 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

185 tok/svs84 tok/s

Time to first token

110 msvs270 ms

Gemini 2.5 Flash: 2WGLM-5.2: 0W

Tied (1/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$2.5/1Mvs$0.97/1M

Input price

$0.3/1Mvs$0.31/1M

Context window

1Mvs1M

Gemini 2.5 Flash: 1WGLM-5.2: 1W

Recommended Workload Routing

Repo / coding agentsGLM-5.2

Higher SWE-bench (69.3%).

High-volume chatGLM-5.2

Lower output list price ($0.97/1M).

Voice / low-latency UIGemini 2.5 Flash

Lower TTFT (110 ms).

Long-document RAGGemini 2.5 Flash

Larger window (1M).

Screenshots / visionGLM-5.2

Both accept images. Defaulting to the higher-Elo side (GLM-5.2).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	GLM-5.2	Higher SWE-bench (69.3%).
High-volume chat	GLM-5.2	Lower output list price ($0.97/1M).
Voice / low-latency UI	Gemini 2.5 Flash	Lower TTFT (110 ms).
Long-document RAG	Gemini 2.5 Flash	Larger window (1M).
Screenshots / vision	GLM-5.2	Both accept images. Defaulting to the higher-Elo side (GLM-5.2).

Frequently Asked Questions

Which is better overall, Gemini 2.5 Flash or GLM-5.2?

GLM-5.2 has the higher preference Elo in our latest snapshot (1,492). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Gemini 2.5 Flash or GLM-5.2?

GLM-5.2 leads SWE-bench at 69.3% vs 48%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

GLM-5.2 output tokens are $0.97/1M versus $2.5/1M. Input prices and retry rates still move the real bill.

Which is faster, Gemini 2.5 Flash or GLM-5.2?

Gemini 2.5 Flash has the lower time-to-first-token (110 ms vs 270 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Gemini 2.5 Flash accepts 1M tokens versus 1M.

Can I self-host either model?

GLM-5.2 is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 2.5 Flash and GLM-5.2 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GLM-5.2

Gemini 2.5 Flash

GLM-5.2

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

GLM-5.2 vs GLM 5V Turbo Price and SWE-bench 2026

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Gemini 2.5 Flash: previous Google speed workhorse, still a baseline

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Gemini 2.5 Flash

GLM-5.2

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GLM-5.2

Gemini 2.5 Flash

GLM-5.2

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

GLM-5.2 vs GLM 5V Turbo Price and SWE-bench 2026

GLM-5.2 remains the prior Zhipu flagship for upgrade pairs

Gemini 2.5 Flash: previous Google speed workhorse, still a baseline

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Gemini 2.5 Flash

GLM-5.2

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons