Model profile
Z AI

Z.ai: GLM 4.5 Air

Z.ai: GLM 4.5 Air is a budget-priced text-first model from Z AI with heavy runtime profile, extended context posture, and the clearest fit around long-context research / agent workflows.

Best for: Long-context research / Agent workflowsHeavy latencyExtended contextBudget pricing
Intelligence
23.2

Benchmark blend

Coding
23.8

Dev workflow signal

Context
131K Tokens

Extended

Input Price
$0.17

Budget tier

Decision snapshot
46

Z.ai: GLM 4.5 Air currently reads as a budget text-first option with extended context and a heavy runtime profile.

Overall profile
Use-case specific
Best for
Long-context research / Agent workflows
Latency tier
Heavy
Price tier
Budget
Source coverage
OpenRouterArtificial Analysis

Decision Strip

Decision rail before the raw tables

Core buy-side signals stay in one pass. The rest of the page expands only after intelligence, speed, context, and price are clear.

Intelligence
23.2
23

General reasoning and benchmark headroom.

Limited
Speed
35 tok/s
44

TTFT 1.69s

Situational
Context
131K Tokens
76

How much prompt and task state can stay in view.

Competitive
Price
$0.17
86

$0.98 output / 1M

Efficient

Editorial Profile

Z.ai: GLM 4.5 Air in one narrative

Positioning, tradeoffs, and fit are consolidated into one read instead of repeating the same story across separate cards.

Use-case specificCoding score 24Math score 81

GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter...

Identity

Z AI text-first profile

Positioning

Long-context research / Agent workflows with extended context and heavy runtime.

Cost posture

Efficient spend profile. More comfortable for sustained prompt volume if the capability fit is right.

Strengths
  • Large context headroom supports repo-wide prompts and long research sessions.

Tradeoffs
  • Budget-friendly input pricing is a strength, but raw capability may vary by workload.

  • Latency profile is better for deliberate runs than rapid back-and-forth chat.

  • Current metadata points to a text-first profile rather than a broad multimodal one.

Best fit
  • Long-context summarization, repo analysis, and policy or document review.

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Context
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Benchmarks

Grouped by job-to-be-done

Only benchmark categories with actual signal are shown. Secondary values stay as simple definitions instead of nested micro-cards.

General intelligence

Broad reasoning, knowledge depth, and flagship benchmark posture.

Intelligence Index
23.2
MMLU Pro
81.5%
GPQA
73.3%
HLE
6.8%
Coding

Software implementation, debugging quality, and coding benchmark signal.

Coding Index
23.8
LiveCodeBench
0.684
SciCode
30.6%
Math

Formal reasoning, structured problem solving, and competition-style math.

Math Index
80.7
AIME
67.3%
AIME 2025
80.7%
Math 500
96.5%
Agent / tool use

Long-horizon execution quality and interactive benchmark evidence.

IFBench
37.6%
TAU2
46.5%
TerminalBench Hard
20.5%
LCR
43.7%

Specs & Pricing

Technical snapshot and cost posture

Specs stay neutral, pricing gets emphasis through values rather than extra containers. Raw provider internals remain in metadata at the end.

Technical snapshot
Context Window
131K Tokens
Vision
Text-first
Modalities
text
Tokenizer
Other
Max Completion
98304
Moderation
No
Supported Parameters
frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningrepetition_penaltyseedstoptemperaturetool_choicetoolstop_ktop_p
Input Modalities
text
Output Modalities
text
Price architecture
Input
per 1M input tokens
$0.17
Output
per 1M output tokens
$0.98
Blended
AA 3:1 mix
$0.37

This model is relatively efficient on price. It is the easier fit when sustained prompt volume matters.

OR Cache Read
$0.00

Metadata

Raw source tables at the end

Verification details remain available, but the page no longer forces them ahead of the editorial read.