Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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EfficientAUTO PROFILELIVE INDEX

Z.ai: GLM 5.1

text->text

Z.ai: GLM 5.1 is a general-purpose chat-tuned model. Available via z-ai. 203K-token context. Mid-tier pricing.

Z.ai: GLM 5.1 is a efficient AI model from z-ai. It costs $0.980 per million input tokens and $3.080 per million output tokens (blended $1.610/M), with a 203K-token context window.

Modalities textPricing source ↗Compare with another model →Estimate monthly cost →
INPUT
$0.980/M
per million input tokens
OUTPUT
$3.080/M
per million output tokens
BLENDED 70/30
$1.610/M
default reference rate · how it's calculated →
CONTEXT
203K
202,752 tokens
What it's good at
  • Solid general chat performance
  • Reasonable instruction following
Typical use cases
  • General chat
  • Drafting and rewriting
  • Personal productivity
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
More from z-ai
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in $0.950/Mout $3.000/M
Z.ai: GLM 5V Turbo
text+image+video->text · 203K ctx
in $1.200/Mout $4.000/M
Z.ai: GLM 5 Turbo
text->text · 262K ctx
in $1.200/Mout $4.000/M
Z.ai: GLM 5
text->text · 203K ctx
in $0.600/Mout $1.920/M
Z.ai: GLM 4.7 Flash
text->text · 203K ctx
in $0.060/Mout $0.400/M
Z.ai: GLM 4.7
text->text · 203K ctx
in $0.400/Mout $1.750/M
Frequently asked questions

How much does Z.ai: GLM 5.1 cost?

Z.ai: GLM 5.1 costs $0.980 per million input tokens and $3.080 per million output tokens, for a blended reference rate of $1.610 per million tokens.

What is Z.ai: GLM 5.1's context window?

Z.ai: GLM 5.1 supports up to 203K tokens of context (202,752 tokens).

What is Z.ai: GLM 5.1 best for?

Z.ai: GLM 5.1 is well suited to Solid general chat performance, Reasonable instruction following and General chat.

Who makes Z.ai: GLM 5.1?

Z.ai: GLM 5.1 is developed and served by z-ai.