Zhipu AI / Z.ai

GLM 5.1

Type
language model
Context
205K tokens
Max output
131K
Released
27 March 2026
API string
glm-5.1
Weights
open

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
AIHubMix coding-glm-5.1 $0.06 $0.22 31 Jul 2026
NanoGPT zai-org/glm-5.1 $0.3 $2.55 31 Jul 2026
crof $0.45 $2.15 31 Jul 2026
hpc-ai $0.615 $2.46 31 Jul 2026
EmpirioLabs AI $0.825 $3.301 31 Jul 2026
AIHubMix zai-glm-5.1 $0.845 $3.38 31 Jul 2026
NEAR AI $0.85 $3.3 31 Jul 2026
ebcloud $0.857 $3.429 31 Jul 2026
302.AI $0.86 $3.5 31 Jul 2026
alibaba-cn $0.87 $3.48 31 Jul 2026
ZenMux $0.878 $3.513 31 Jul 2026
LLM Gateway $0.931 $2.93 31 Jul 2026
OpenRouter z-ai/glm-5.1 $0.966 $3.036 31 Jul 2026
DigitalOcean Gradient AI $0.975 $4.3 31 Jul 2026
GMI Cloud $0.98 $3.08 31 Jul 2026
Pioneer $0.98 $3.08 31 Jul 2026
wafer.ai $1 $3.2 31 Jul 2026
CrossModel $1 $3.8 31 Jul 2026
Hugging Face $1 $3.2 31 Jul 2026
DeepInfra $1.05 $3.5 31 Jul 2026
FastRouter $1.05 $3.5 31 Jul 2026
OpenRouter openrouter/z-ai/glm-5.1 $1.05 $3.5 31 Jul 2026
dinference $1.25 $3.89 31 Jul 2026
Kilo Code $1.26 $3.96 31 Jul 2026
Baseten $1.3 $4.3 31 Jul 2026
Cortecs $1.31 $4.1 31 Jul 2026
novita-ai $1.38 $4.4 31 Jul 2026
opencode-go $1.4 $4.4 31 Jul 2026
friendli $1.4 $4.4 31 Jul 2026
ambient $1.4 $4.4 31 Jul 2026
frogbot $1.4 $4.4 31 Jul 2026
inceptron $1.4 $4.4 31 Jul 2026
auriko $1.4 $4.4 31 Jul 2026
siliconflow-cn $1.4 $4.4 31 Jul 2026
zai $1.4 $4.4 31 Jul 2026
tensorx $1.4 $4.4 2 Aug 2026
Abacus.AI $1.4 $4.4 31 Jul 2026
Fireworks AI $1.4 $4.4 1 Aug 2026
Merge Gateway $1.4 $4.4 31 Jul 2026
OpenCode Zen $1.4 $4.4 31 Jul 2026
OrcaRouter $1.4 $4.4 31 Jul 2026
SiliconFlow $1.4 $4.4 31 Jul 2026
Together AI $1.4 $4.4 31 Jul 2026
Umans AI $1.4 $4.4 31 Jul 2026
Vercel $1.4 $4.4 31 Jul 2026
Weights & Biases $1.4 $4.4 31 Jul 2026
Z.ai $1.4 $4.4 31 Jul 2026
NanoGPT TEE/glm-5.1 $1.5 $5.25 31 Jul 2026
hyper $1.524 $4.791 31 Jul 2026
greenpt $1.756 $5.518 31 Jul 2026

Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.

A single provider appears several times if it sells this model under different identifiers and at different prices — for example, at different weight precision. The identifier is shown next to the name. Identical offers that arrived from two sources under different spellings are merged into one row.

The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.

Measurement results

Task set Result Run conditions Measured by
Arena Score, web development 1,516.16 1,508–1,524
Arena Score, programming 1,493.04 1,486–1,500
Arena Score, expert questions 1,483.37 1,472–1,494
Arena Score, mathematics 1,478.76 1,464–1,493
Arena Score in English 1,477.83 1,472–1,484
Arena Score, multi-turn dialogue 1,475.81 1,467–1,485
Arena Score, hard prompts 1,475.21 1,470–1,480
Arena Score in French 1,474.78 1,456–1,494
Arena Score, long queries 1,470.85 1,465–1,477
Arena Score, overall 1,465 1,461–1,469
Arena Score in Russian 1,463.32 1,453–1,474
Arena Score in Spanish 1,456.35 1,437–1,475
Arena Score, creative writing 1,454.14 1,445–1,463
Arena Score, instruction following 1,453.16 1,447–1,460
Mock AIME 2024–2025 — olympiad problems 92.21 % · with a tuned harness Epoch evaluations
GPQA Diamond — graduate-level questions 80.64 % · with a tuned harness Epoch evaluations
SWE-bench Verified — fixing bugs in repositories 74.17 % · with a tuned harness Epoch evaluations
WeirdML — unusual machine learning tasks 57.1 % https://htihle.github.io/weirdml.html
SimpleBench — trick questions 46.12 % SimpleBench Leaderboard
SimpleQA Verified — factual accuracy 37.29 % Epoch evaluations
Chess puzzles 13.72 % Epoch evaluations
CritPt — physics problems 4.57 %
Arena Score, agent tasks 0 0–0