Can I run GLM 4.5 Air or Glm 4p5 Air cheaper on another provider?

Some models are available on inference providers like Together AI, Groq, and Fireworks AI at lower prices. Check each model's pricing page for the full provider comparison.

What is the context window difference between GLM 4.5 Air and Glm 4p5 Air?

Glm 4p5 Air has a larger context window at 128K tokens vs 128K. This matters for long documents, large codebases, and extended conversation histories.

Compare

GLM 4.5 Air vs Glm 4p5 Air

Pricing is only the shared seller matrix below. Best rates and catalog map are separate sections, so no chart is embedded in pricing. Open the calculator for the same workload on each side.

Z Ai

Model

GLM 4.5 Air

Tool calling

Best $0.130 in · $0.850 out

Context window 128K

Pricing

Z Ai

Model

Glm 4p5 Air

Tool calling

Best $0.220 in · $0.880 out

Context window 128K

Pricing

GLM 4.5 Air is 9% cheaper on input. Glm 4p5 Air is 20% cheaper on output. The best choice depends on your input/output ratio.

Estimate cost

Pricing matrix

Shared sellers only. Each row is a host that lists both models. Dollar amounts are per 1M tokens. Lowest in each pair of columns is emphasized.

Provider	GLM 4.5 Air in	GLM 4.5 Air out	Glm 4p5 Air in	Glm 4p5 Air out
Fireworks AI	N/A	N/A	$0.220	$0.880
Novita	$0.130	$0.850	N/A	N/A
Openrouter	$0.130	$0.850	N/A	N/A
Vercel Ai Gateway	$0.200	$1.10	N/A	N/A
Z Ai	$0.200	$1.10	N/A	N/A

Best listed rates (this pair)

Same "best row in current pricing" logic as model pages: a compact view of the lowest input and output we show for each side. This is not the seller matrix.

Catalog map · Z Ai

Each chart uses real catalog rows that include both list input and list output ($/1M). Larger green dots are the models on this comparison page; accent dots are other active models from that provider.

Z Ai · input vs output

Scatter chart: X = input $/M, Y = output $/M. This page's models are labeled on the green dots; hover others for detail.

ListedoutputUSD/1M

One dot per catalog row that has both list prices. Green dots are labeled with the models on this page; hover any dot for name and prices. Upper-right means higher cost on both axes ($/1M).

Specifications

Each column header is the full model name. Tint marks the favorable value where we compute a winner.

Spec

GLM 4.5 Air

Glm 4p5 Air

Context window: 128,000 tokens; 128,000 tokens
Max output tokens: 32,000 tokens; 96,000 tokens
Vision: No; No
Function calling: Yes; Yes
Streaming: No; No
Release date: Jul 2025; N/A

Cost calculator

Same requests, input tokens, and output tokens for both columns. Pick the provider row that matches how you buy.

GLM 4.5 Air

Glm 4p5 Air

Requests / day

Input tokens

Output tokens

GLM 4.5 Air

Monthly

$225

Annual

$2.7K

Glm 4p5 Air

Monthly

$198

Annual

$2.4K

Save $27/month with Glm 4p5 Air

When to pick which

Short takeaways: no cards, just the points. Validate with your own workloads.

High-volume text generation
Use Glm 4p5 Air. Output tokens are 20% cheaper, which compounds significantly at scale.
Long output (reports, code files)
Use Glm 4p5 Air. Its 96K max output limit reduces the need to split requests.

Frequently asked questions

GLM 4.5 Air is cheaper on input tokens, while Glm 4p5 Air is cheaper on output. The best choice depends on your input/output ratio.

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