Model garden Router · warm Dedicated · available

GLM 5.3

Instantly via the EU router or as a dedicated GPU deployment. Data stays in Europe.

GLM-5.3 uses the same base model as GLM-5.2 — every gain comes from post-training. Compared with GLM-5.2, it is much better at complex coding and long-horizon tasks:

zai-org/GLM-5.3
text->text · zai-org · sovereign EU
Runs on EU infrastructure operated by European companies; US marketplace capacity is never part of this chain. Full chain
753B
Parameters
1,049K
Context window
907GB
Minimum VRAM
POST /api/v1/chat/completions 200 OK

Specifications

Parameters 753B
Context window 1,048,576 tokens
Context on every source 524,288 tokens · The router sends longer requests to a source where they fit.
Minimum VRAM 907 GB
Architecture GlmMoeDsaForCausalLM (vLLM)
License other
Modality text->text
Released August 2026
Publisher zai-org ↗

Pricing

Shared router · per token
€1.15
Input (per 1M tokens)
€4.03
Output (per 1M tokens)
€0.29 per million cached input tokens
Dedicated GPU · per hour
from €54,00 per hour
Your own vLLM instance on European cloud (907 GB VRAM), billed hourly.

Shared EU router, pay-per-token, scale-to-zero. Dedicated GPU deployments are billed hourly, see pricing.

Bench index

Bench is our quality index for every model, 0 to 100. It rests on public measurements (Epoch AI with about 40 benchmarks, LiveBench, LMArena and more) and is refreshed every morning. Where nobody measures, it shows an estimate with a range.

82.0 / 100 · Measured

Measured by Epoch AI across 15 benchmarks, with a range.

Range 79.5 to 84.9 · Rank 27 of 274 at Epoch AI

Sources: Epoch AI ↗ · LiveBench ↗ · LMArena ↗ · Refreshed daily, last on 08-10-2026

LiveBench · 76.1 · Rank 32 of 69
Reasoning 85.8
Coding 79.0
Agentic coding 60.9
Mathematics 87.9
Data analysis 70.2
Language 79.9
Instruction following 69.3
Every benchmark (15)
OTIS Mock AIME 2024-2025 91.1
GPQA diamond 87.9
DTBench 79.5
WeirdML 75.4
DeepSWE 69.0
FrontierMath-Tiers-1-3-v2-Private 68.8
LMCA 65.3
APEX-Agents 56.6
ProofBench 49.0
SimpleQA Verified 41.0
FrontierCode 40.1
FrontierSWE 30.2
FrontierMath-Tier-4-v2-Private 29.3
Mystery Game Puzzles 26.2
Chess Puzzles 16.9
LiveBench · All tasks
Reasoning
theory of mind 88.5
zebra puzzle 88.8
spatial 96.0
logic with navigation 70.0
Coding
code generation 77.5
code completion 80.4
Agentic coding
javascript 72.7
typescript 50.0
python 60.0
Mathematics
AMPS Hard 99.0
integrals with game 69.0
math comp 96.1
olympiad 87.5
Data analysis
consecutive events 72.3
tablejoin 42.4
tablereformat 96.1
Language
connections 95.3
plot unscrambling 60.2
typos 84.0
Instruction following
paraphrase 64.7
simplify 65.9
story generation 72.1
summarize 74.6

Call it now

Drop-in replacement for OpenAI: change only the base URL and API key. The Anthropic format (/v1/messages) is supported too.

curl https://hostyourai.com/api/v1/chat/completions \
  -H "Authorization: Bearer hyai-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "zai-org/GLM-5.3",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Frequently asked questions

Can I run GLM 5.3 in the EU?

Yes. HostYourAI runs GLM 5.3 on GPUs in European datacenters via vLLM. Prompts and outputs never leave the EU and there is no US cloud provider in the chain.

Is hosting GLM 5.3 GDPR-compliant?

Yes. All processing happens inside the EU, a Data Processing Agreement (DPA) is available and the subprocessor list is public. Open-source weights also mean: no training on your data.

How much does GLM 5.3 cost?

Via the shared EU router you pay €1.15 per million input tokens and €4.03 per million output tokens, with no fixed costs. For high volume or isolation you can also run GLM 5.3 as a dedicated hourly GPU instance.

Is the API OpenAI-compatible?

Yes. You use the standard OpenAI SDKs with a custom base URL (https://hostyourai.com/api/v1). The Anthropic Messages API is supported as a drop-in as well.

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