The Known Good Updated 25 Jul 2026
Google: Gemini 3.5 Flash vs Z.ai: GLM 4.7 ·Google vs Z.ai

Google: Gemini 3.5 Flash vs Z.ai: GLM 4.7 — head-to-head comparison

Google: Gemini 3.5 Flash profile Z.ai: GLM 4.7 profile All comparisons
Google: Gemini 3.5 Flash — Google
Quality
#3 of 61
95based on 3 of 6 evaluations
Known Good Index
Speed
#31 of 316
119.0
Output tokens per second
Price
#257 of 340
$3.38
Blended per 1M tokens
In $1.50 · Out $9.00
Cache hit price
#127 of 206
$0.15
per 1M tokens (−90%)
Context
#46 of 345
1.05M
tokens (~1,600 pages)
Z.ai: GLM 4.7 — Z.ai
Quality
#26 of 61
68based on 3 of 6 evaluations
Known Good Index
Speed
#109 of 316
66.2
Output tokens per second
Price
#168 of 340
$0.74
Blended per 1M tokens
In $0.40 · Out $1.75
Cache hit price
#83 of 206
$0.080
per 1M tokens (−80%)
Context
#193 of 345
205k
tokens (~300 pages)
Summary

On the Known Good Index, Google: Gemini 3.5 Flash scores 95 and Z.ai: GLM 4.7 scores 68 — a 27-point lead for Google: Gemini 3.5 Flash. They share 2 published evaluations, with Google: Gemini 3.5 Flash ahead on 2 and Z.ai: GLM 4.7 ahead on 0.

Blended pricing is $3.38 per 1M tokens for Google: Gemini 3.5 Flash and $0.74 for Z.ai: GLM 4.7 — Z.ai: GLM 4.7 is about 4.6× cheaper.

Throughput is 119 tokens per second for Google: Gemini 3.5 Flash and 66 for Z.ai: GLM 4.7, with time to first token at 1.7s and 2.1s. Google: Gemini 3.5 Flash accepts 1.05M tokens of context against 205k.

Google: Gemini 3.5 Flash is proprietary; Z.ai: GLM 4.7 is open weights under Open weights (unrestricted). 10 tracked hosts serve one or both, and 1 serve both.

Generated from tracked data on 25 Jul 2026 · how these comparisons are computed →

At a glance
MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Known Good Index 95 based on 3 of 6 evaluations 68 based on 3 of 6 evaluations
Blended $/1M $3.38 $0.74
Output tok/s 119 66
Context window 1.05M 205k
Providers 2 9
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Quality

Known Good Index and the capability indices, side by side

IndicesComponents
Index scores

Each index is min-max normalised across tracked models and scaled 0–100 from published evaluations. We do not run these evaluations.

MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Known Good Index 95 68
Mathematics Index 96 83
Science Index 98 86
Agentic Index 92 35
Openness Index 5 60
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = Google: Gemini 3.5 Flash · marker = Z.ai: GLM 4.7 · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond93 / 83
MATH / AIME96 / 83

Right-hand figures read Google: Gemini 3.5 Flash / Z.ai: GLM 4.7. Google: Gemini 3.5 Flash leads on 2 of 2, Z.ai: GLM 4.7 on 0.

The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Arena ratings

Elo from blind pairwise votes, ingested from Arena. Higher is better.

MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Text Arena 1,436
Text Arena (style controlled) 1,442
The Known Good

Price & Cost

Published API pricing by token type

Per token typeCache discount
Published pricing

USD per 1M tokens. Blended is a 3:1 input:output mix. Live from OpenRouter, cross-checked against models.dev. Lower is better.

MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Input $/1M $1.50 $0.40
Output $/1M $9.00 $1.75
Blended $/1M $3.38 $0.74
Cache read $/1M $0.150 $0.080
The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input accepted and maximum output emitted

Context and output limits

Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.

MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Context window 1.05M 205k
Max output tokens 66k 131k
The Known Good

Speed & Latency

Median throughput and time to first token across hosting providers

Output speedTime to first token
Throughput and latency

Medians across all tracked providers, derived from OpenRouter endpoint telemetry.

MetricGoogle: Gemini 3.5 FlashZ.ai: GLM 4.7
Output tokens/s 119 66
Time to first token 1.7s 2.1s
The Known Good

Providers

Which hosts serve each model, and at what price and speed

10 hosts · 1 serve both
Full provider benchmarks →
Provider Google: Gemini 3.5 Flash blendedGoogle: Gemini 3.5 Flash tok/s Z.ai: GLM 4.7 blendedZ.ai: GLM 4.7 tok/s
Google AI Studio $1.69 205
Google · first party $1.69 121 $1.00 140
Cerebras $2.38 401
AtlasCloud $0.85 54
DeepInfra $0.74 49
Venice $1.07 46
StreamLake $0.80 41
Phala $1.46 31
Z.AI · first party $1.00 30
Novita $0.90 27

Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.

The Known Good
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0)Elo — Arena Full attribution →