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GLM 4.5 Air benchmarks, ranks and price

Where Artificial Analysis, LiveBench, LMArena and Berkeley BFCL place GLM 4.5 Air, what it costs through OpenRouter and Vercel AI Gateway, and the models either side of it on the consensus.

Updated Oct 5, 2026Full leaderboardSources and method

Read Oct 5, 2026

#99of 126

on the LLM leaderboard, with a consensus score of 35 across 2 leaderboards.

Source: Artificial Analysis, LiveBench, LMArena and Berkeley BFCL, combined by Rank.ai.

By leaderboard

Where each leaderboard places GLM 4.5 Air

Artificial Analysis

#86of 115

Score 11.1. Best run: z-ai/glm-4.5-air.

Intelligence Index: a composite of reasoning, knowledge, maths and coding evaluations.

LiveBench

Not measured by LiveBench.

Contamination-limited questions refreshed each release: reasoning, maths, coding, data analysis, language.

LMArena

#80of 115

Score 1373. Best run: glm-4.5-air.

Blind head-to-head human votes, style controlled.

Berkeley BFCL

Not measured by Berkeley BFCL.

Function calling and tool use, single turn to multi turn and web search.

Price and context

$0.31

OpenRouter: $0.13 in, $0.85 out. Vercel AI Gateway: $0.20 in, $1.10 out Context window 131K tokens.

Nearby

The models either side of GLM 4.5 Air

  1. #96o3 Mini High36
  2. #97Qwen3 Next 80B A3B Thinking36
  3. #98Mistral Small 435
  4. #99GLM 4.5 Air35
  5. #100gpt-oss-120b34
  6. #101Mistral Large31
  7. #102GLM 4.5V30

Questions about GLM 4.5 Air

How good is GLM 4.5 Air?
GLM 4.5 Air ranks #99 of 126 models on the Rank.ai LLM leaderboard, with a consensus score of 35 out of 100 across 2 leaderboards.
Is GLM 4.5 Air better than Mistral Small 4?
Not on the consensus: Mistral Small 4 scores 35 to GLM 4.5 Air's 35. Compare them source by source below, since the leaderboards test different things.
Is GLM 4.5 Air better than gpt-oss-120b?
On the consensus, yes: 35 to 34.
How much does GLM 4.5 Air cost?
$0.13 per million input tokens and $0.85 per million output tokens on OpenRouter, the cheaper listing we read. Blended at three input tokens to one output, that is $0.31 per million.

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