Z.ai GLM · LLM API pricing

GLM-4.5-Air API pricing: cheapest provider

4 providers sell GLM-4.5-Air. Novita AI is cheapest; the most expensive charges 1.4× as much for the same model.

Cheapest$0.31per 1M · Novita AI
Input · output$0.13 / $0.85per 1M tokens
Price gap1.4×across 4 providers
Context131Kmax tokens

$0.31 Novita AI1.4× spread$0.425 Z.ai

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Standard list prices in USD from each provider's pricing page · last price change Sep 28, 2026 · How we collect and rank prices

Ranked for your volume

GLM-4.5-Air monthly cost by provider

Change the monthly tokens and the ranking updates instantly, using each provider's standard list price.

Input tokens per month (millions)Prompts, context and documents you send.Output tokens per month (millions)Tokens the model generates.

More requirements: caching, context, features, provider

Cached share of input (%)0 = no caching. Only documented cache-read rates qualify.Required context per request (tokens)0 = any. Providers without a sufficient known limit are excluded.Required featureProvider requirement

Provider	Estimated / month	Input / 1M	Output / 1M	Cached input / 1M	Context
1 Novita AIInference provider - lowest for your volumePricing page	$3.00	$0.13	$0.85	$0.025	131,072
2 SiliconFlowInference providerPricing page	$3.12	$0.14	$0.86	Not listed	131,000
3 Fireworks AIInference providerPricing page	$3.96	$0.22	$0.88	Not listed	131,072
4 Z.aiModel developerPricing page	$4.20	$0.20	$1.10	Not listed	128,000

Order depends on listed price for your volume only. No provider pays for its position.

Input volume includes the cached share, not an additional token volume. This is a list-price estimate, not a quote: cache-write charges, cache eligibility/TTL, batch discounts, long-context surcharges, regional pricing and taxes are excluded. Check the provider's terms for your workload before switching.

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| GLM-4.5-Air provider | Input / 1M tokens | Output / 1M tokens | 10M in + 2M out per month |
|---|---:|---:|---:|
| Novita AI | $0.13 | $0.85 | $3.00 |
| SiliconFlow | $0.14 | $0.86 | $3.12 |
| Fireworks AI | $0.22 | $0.88 | $3.96 |
| Z.ai | $0.20 | $1.10 | $4.20 |

Standard list prices as of Oct 31, 2026. Source: [AISelect.online](https://aiselect.online/models/glm-4-5-air)

Price history

The cheapest price has not changed since tracking started on Sep 28, 2026: $0.31 per 1M tokens at Novita AI. All price changes

Switch to the cheapest provider

Switch to Novita AI

Already using the OpenAI SDK? Change the base URL, key and model name:

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.novita.ai/openai",
    api_key=os.environ["NOVITA_API_KEY"],
)
response = client.chat.completions.create(
    model="zai-org/glm-4.5-air",
    messages=[{"role": "user", "content": "Hello"}],
)

Base URL from Novita AI's API docs, model name from the open pricing datasets. Check the model page in Novita AI's docs before you switch production traffic.

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Before you pick a provider

Novita AI lists GLM-4.5-Air 27% below the developer's own API (Z.ai) on a blended basis. Check rate limits, data retention and model quantization before switching.

Context windows differ by provider, from 128K to 131K tokens. A cheaper host may not accept your longest prompts.

1 of 4 providers list a cached-input price. Repeated system prompts or documents can cost much less there than the standard input rate shown above.

Keep comparing

More Z.ai GLM models

GLM-5.2, GLM-5.3, GLM-5.3-Flash, GLM-5.1, GLM-4.6, GLM-4.7, GLM-5, GLM-4.5

All Z.ai GLM API prices - All LLM API prices - Watch GLM-4.5-Air prices (RSS) - Methodology