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glm-5.3Melious

in /1M$1.14input tokens
out /1M$3.42output tokens
context1M131K out
median ttft681msmeasured
api
chat
hosting
EU
model lab
Z.AI
weights
open
added
August 2026
model id
melious/glm-5.3

capabilities 3/8

visionreasoningtoolscachingweb searchjson schemacomputer useimage gen

11 providers serve glm-5.3. This page is one of them. Compare all endpoints

pricing

no markup
input
$1.14
output
$3.42
cache write
-
cache read
$0.23

worked cost

Estimated cost for three request volumes
volumecost
100K in + 10K out$0.15
1M in + 100K out$1.48
10M in + 1M out$14.82

Requesty charges what the upstream provider charges, with no markup and no per-request fee. Prompt caching and smart routing cut the effective cost further on repeated context. Gateway pricing

provider price, passed throughper 1M tokens

measured

through Nov 2
median ttft
681ms
median tok/s
67.0
blended /1M
$0.32
cache hit
93.1%
answered
99.90%

Weekly aggregates from production traffic routed through Requesty to this endpoint. A metric with no qualifying sample is left out rather than filled in. Compare against the other providers

benchmarks

artificial analysis
Benchmark scores, each normalised to 100
evalScore as a share of 100/100
GPQA Diamond91.7
SciCode59.0
Humanity's Last Exam42.3
Intelligence Index31.7
4 evalsmean56.2

Scores from Artificial Analysis and public leaderboards, normalised to 100. Bar colour is the band, not the rank: green 80 and up, blue 55 and up, amber 30 and up. Benchmarks measure narrow skills, so test on your own workload before committing. Released 2026-08-18.

policy

data terms
retention
none
trains on prompts
no
hosted in
EU

Terms are the provider's, not Requesty's: routing a request here puts it under them. Melious Data Processing Agreement

Need every request to stay in one jurisdiction? EU hosting routes only through EU-hosted providers.

quickstart

openai compatible
melious/glm-5.3

this id pins the melious deployment, with no routing and no failover. the managed id on the canonical page routes across all 11 providers instead

main.py
from openai import OpenAI client = OpenAI(    api_key="YOUR_REQUESTY_API_KEY",    base_url="https://router.requesty.ai/v1",) response = client.chat.completions.create(    model="melious/glm-5.3",    messages=[        {"role": "user", "content": "Explain quantum computing in one paragraph."},    ],) print(response.choices[0].message.content)

Change the base url to https://router.requesty.ai/v1, use your Requesty key, set the model to the id above. Existing OpenAI SDK code needs no other edit, and the same key reaches every other model in the catalog. Browse all models

notes

reference

GLM-5.3 is Z.ai's flagship 744B MoE hybrid reasoning model for complex coding and long-horizon agent tasks, with a 1M token context. Served from the EU by Melious.

questions 6

How much does glm-5.3 cost?
glm-5.3 is priced at $1.14 per million input tokens and $3.42 per million output tokens when accessed via Requesty. Prompt caching is supported, which can cut effective input cost by up to 90% on repeated context. Requesty charges exactly what the upstream provider charges, we don't add markup.
What is the context window of glm-5.3?
glm-5.3 has a context window of 1M tokens, with a maximum output of 131K tokens per response. That is roughly 1,333 words of input you can fit in a single prompt.
How does glm-5.3 perform on benchmarks?
glm-5.3 scores 91.7% on GPQA Diamond, 59.0% on SciCode, 42.3% on Humanity's Last Exam. The benchmarks pane shows every published result, each normalised to 100.
What can glm-5.3 do?
glm-5.3 supports tool calling, extended reasoning, prompt caching. You can call it through any OpenAI-compatible client by pointing base_url to Requesty.
How do I use glm-5.3 with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "melious/glm-5.3". The quickstart pane shows Python, JavaScript and cURL snippets.
Can I run glm-5.3 through Requesty?
Yes. glm-5.3 runs through Requesty's OpenAI-compatible API, served from Melious. You do not host the model yourself: point base_url at Requesty, set the model to "melious/glm-5.3", and requests are routed to the upstream provider with automatic failover. The same key gives you 600+ other models too.

more from melious 6

Other Melious endpoints
endpointctxin /M
clef-$0.24
clef-flash-$0.09
deepseek-v4.1-flash-10171M$0.23
deepseek-v4.1-flash1M$0.23
glm-5.3-flash1M$0.12
deepseek-v4-flash-07311M$0.12

call glm-5.3 through one endpoint

One key for this endpoint and 600+ other models. No markup on provider prices, automatic failover when a provider degrades, and prompt caching built in. Methodology

glm-5.3meliousin $1.14 /1Mout $3.42 /1Mctx 1Mttft 681mshosted EU11 providers serve this model