The Known Good Updated 29 Jul 2026
Z.ai ·Open weights (unrestricted) ·Released June 2026·Tracked since 25 Jul 2026

Z.ai: GLM 5.2 — quality, speed & price analysis

Compare with another model Provider benchmarks Data sources
Quality
#8 of 62
91based on 3 of 7 evaluations
Known Good Index
Speed
#164 of 317
47.5
Output tokens per second
Price
#224 of 370
$1.16
Blended per 1M tokens
In $0.76 · Out $2.38
Cache hit price
#142 of 238
$0.14
per 1M tokens (−81%)
Context
#57 of 375
1.05M
tokens (~1,600 pages)
Summary

Z.ai: GLM 5.2 is in the top quarter of the models we track for quality, and inexpensive for its standing, with mid-range throughput. It accepts text input, outputs text, and supports a 1.05M-token context window.

It scores 91 on the Known Good Index, well above the tracked average of 64, from 3 of the seven component evaluations. Measured against the tracked average, its strongest result is Mock AIME 2024–25 (86 against 53) and its weakest is SWE-bench Verified (79 against 71).

Pricing is $0.76 per 1M input tokens (below the $2.10 average) and $2.38 per 1M output (below the $9.62 average). Cached input reads at $0.14 per 1M, a 81% discount on its input price. At 48 tokens per second it sits in the lower middle of the tracked range.

Generated from tracked data on 29 Jul 2026 · how these comparisons are computed →

Technical specifications
ReasoningYes
Input modalitytext
Output modalitytext
Context window1,048,576 tokens
Max output131,072 tokens
WeightsOpen weights · Open weights (unrestricted)
Knowledge cutoff
Tool callingYes
Providers29 hosts · compare →
Highlights — where Z.ai: GLM 5.2 sits
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Quality

How Z.ai: GLM 5.2 compares against every tracked model

Known Good IndexCapability indices
Known Good Index

Composite of GPQA Diamond, Mock AIME 2024–25, MATH Level 5, SWE-bench Verified, LiveBench, Humanity's Last Exam and Terminal-Bench, normalised 0–100. Scores are ingested from Epoch AI; we do not run these evaluations.

💡 A lightbulb marks a model its provider publishes as a reasoning model
The Known Good

Quality Breakdown

Z.ai: GLM 5.2 on each evaluation feeding the index, against the tracked average

Evaluation scores

Bar = Z.ai: GLM 5.2 · grey marker = average across tracked models · scores ingested from Epoch AI

GPQA Diamond92 / 63
Mock AIME 2024–2586 / 53
SWE-bench Verified79 / 71
The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Text Arena

Elo from blind pairwise votes, ingested from Arena

1464
Elo · 95% CI ±6
#22
of 386 ranked models
18k
votes counted
1469
style-controlled (#30)

Ingested 27 Jul 2026.

The Known Good

Price & Cost

Published API pricing by token type

BlendedInput vs outputQuality per dollar
Blended Price

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

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 tokens accepted

Context windowMax output tokens
Context Window

Maximum input context from provider metadata via models.dev and OpenRouter. Higher is better.

The Known Good

Speed

Median output throughput across hosting providers

Output speedBy provider

Latency

Time to first token, median across providers

Latency (TTFT)

Seconds to first streamed chunk, median across tracked providers. Derived from OpenRouter endpoint telemetry. Lower is better.

The Known Good

Providers

Hosts serving Z.ai: GLM 5.2, with their own price and speed

29 providers
Full provider benchmarks →
ProviderInput $/MOutput $/M BlendedSpeedTTFTContext
BaseTen $1.40 $4.40 $2.15 150 1.7s 524k
Friendli $1.40 $4.40 $2.15 101 0.9s 1.05M
Together $1.40 $4.40 $2.15 98 1.0s 512k
Wafer $1.26 $3.96 $1.94 91 3.5s 1.05M
Ionstream $1.40 $4.40 $2.15 83 0.5s 1.05M
Fireworks $1.40 $4.40 $2.15 80 1.3s 1.05M
Decart $1.20 $2.50 $1.52 77 0.6s 1.05M
Chutes $1.25 $3.95 $1.93 68 1.3s 1.05M
CoreWeave $0.76 $2.42 $1.18 67 0.7s 262k
Alibaba · first party $0.81 $2.53 $1.24 65 0.9s 1.05M
Parasail $1.40 $4.40 $2.15 65 1.6s 262k
DeepInfra $0.93 $3.00 $1.45 56 0.6s 1.05M
Io Net $3.33 $7.28 $4.32 54 5.0s 262k
Morph $1.10 $4.10 $1.85 54 2.3s 1.05M
Baidu · first party $0.70 $2.20 $1.07 53 1.2s 1.05M
Cloudflare $1.40 $4.40 $2.15 53 2.4s 262k
Phala $1.40 $4.40 $2.15 50 1.4s 1.05M
Sail Research $1.00 $3.50 $1.62 47 1.0s 1.05M
AkashML $0.77 $2.42 $1.18 44 2.9s 97k
Ambient $1.05 $4.40 $1.89 44 7.9s 101k
GMICloud $0.92 $2.90 $1.42 37 3.3s 1.05M
AtlasCloud $1.26 $3.96 $1.94 35 2.0s 1.05M
Venice $1.40 $4.40 $2.15 35 2.0s 1.00M
Z.AI · first party $1.40 $4.40 $2.15 32 4.2s 1.05M
SiliconFlow $1.30 $4.09 $2.00 31 3.5s 1.05M
Novita $0.76 $2.38 $1.16 27 2.6s 1.05M
DigitalOcean $1.05 $4.40 $1.89 26 1.1s 262k
StreamLake $0.76 $2.38 $1.16 26 2.3s 1.02M
Inceptron $0.94 $2.90 $1.43 8 2.0s 1.05M

Per-host pricing and telemetry from OpenRouter. Speed is output tokens per second; TTFT is time to first token.

The Known Good

History

How price and quality have moved since we began tracking this model

Quality & price over time

Since 25 Jul 2026

Known Good Index 91 · based on 3 of 7 evaluations
Blended price $1.16 per 1M · observed 29 Jul 2026
Output speed 48 tok/s · observed 29 Jul 2026
Time to first token 2.2s
28 Jul 2026 · price change
Z.ai: GLM 5.2 price up 7%
Blended 3:1 price moved from $1.11 to $1.18 per 1M tokens (OpenRouter).
27 Jul 2026 · price change
Z.ai: GLM 5.2 price up 23%
Blended 3:1 price moved from $1.03 to $1.27 per 1M tokens (OpenRouter).
The Known Good

Comparisons

Head-to-head pages pairing Z.ai: GLM 5.2 with other tracked models

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