Z.ai GLM · LLM API pricing

GLM 5.3 Fast API pricing: cheapest provider

2 providers sell GLM 5.3 Fast. Baseten is cheapest, and listed prices are close.

Cheapest$3.23per 1M · Baseten
Input · output$2.10 / $6.60per 1M tokens
Price gap1.0×across 2 providers
Context1Mmax tokens

$3.23 Basetenclose prices$3.23 Fireworks 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 5.3 Fast 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 BasetenInference provider - lowest for your volumePricing page	$34.20	$2.10	$6.60	$0.21	1,048,576
2 Fireworks AIInference providerPricing page	$34.20	$2.10	$6.60	$0.39	1,048,576

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 5.3 Fast provider | Input / 1M tokens | Output / 1M tokens | 10M in + 2M out per month |
|---|---:|---:|---:|
| Baseten | $2.10 | $6.60 | $34.20 |
| Fireworks AI | $2.10 | $6.60 | $34.20 |

Standard list prices as of Nov 1, 2026. Source: [AISelect.online](https://aiselect.online/models/glm-5-3-fast)

Price history

The cheapest price has not changed since tracking started on Sep 28, 2026: $3.23 per 1M tokens at Baseten. All price changes

Switch to the cheapest provider

Switch to Baseten

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

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://inference.baseten.co/v1",
    api_key=os.environ["BASETEN_API_KEY"],
)
response = client.chat.completions.create(
    model="zai-org/GLM-5.3-Fast",
    messages=[{"role": "user", "content": "Hello"}],
)

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

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Before you pick a provider

2 of 2 providers list a cached-input price. Repeated system prompts or documents can cost much less there than the standard input rate shown above.

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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

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