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GLM 5.3

z-ai/glm-5.3
  • Z.ai
  • Family · GLM 5
  • Released 18 Aug 2026
  • Text → Text
  • Reasoning · adjustable
  • Tools · JSON
Spec & list price
Context1M
Max output944K
Input / 1M$0.08
Output / 1M$3.6045× input
Scores · standing
Intelligence44.8#21/489
Coding74.8#14/196
Usage
Tokens / day403.1B▼ 19% 7d
Usage rank#13
Requests / day4.2M
Tool calls / req0.55
Per request · 30 days
Avg input65.7K4.4× median
Avg output1.0K1.5× median
Cache hit91%1.3× median
Reasoning share72%1.3× median
Tool-call failures0.7%0.4× median

Benchmarks

bar = share of the top score · Benchmark data: Artificial Analysis
τ-Bench Banking#4 of 154
50.3%
GPQA Diamond#25 of 445
91.7%
Terminal-Bench 2.1#17 of 182
83.9%
Coding index#14 of 196
74.8
Long-context reasoning#55 of 393
79.7%
SciCode#14 of 160
59.0%
Intelligence index#21 of 489
44.8
Humanity's Last Exam#42 of 465
42.3%
Speed · median across 47 providers, latest day
Output speed#115/33484 tok/s1.3× faster than median
Fastest provider168 tok/sbest of 47 providers
First token#1160.76 s1.4× quicker than median
First answer token#7526 sthinking included

#6 cheapest of 14 with a similar score

Value
Intelligence Index
2530354045$0.1$0.2$0.5$1$2$5GLM 5.3
Blended price per 1M tokens (log)
Family progress
Intelligence Index
2530354045MarAprMayJunJulAugGLM 5.3
  • Family releases44.8

Technical details

Reasoning
on · max
Tokenizer
Other
License
other
Moderation
none
Downloads · likes
2.5M · 2.4K
Reasoning effort
  • max · default
  • high
  • low
Request parameters 21
  • tools
  • tool_choice
  • parallel_tool_calls
  • response_format
  • structured_outputs
  • reasoning
  • reasoning_effort
  • include_reasoning
  • temperature
  • top_p
+11 more
  • top_k
  • min_p
  • max_tokens
  • stop
  • seed
  • frequency_penalty
  • logit_bias
  • logprobs
  • presence_penalty
  • repetition_penalty
  • top_logprobs

Interesting facts

  1. 2.4× the output room of similar models (943.7K against a 393.2K median).
  2. The most used of 4 GLM 5 models by tokens last month.
  3. Released 76 days ago, the newest of 4 GLM 5 models.

When to use

Best for

  • Hard coding and reasoning tasks
  • Banking-style customer tool workflows
  • Very long documents and codebases
  • Large outputs such as full reports

Think twice for

  • Browser-driving agents
  • Image input
  • Cheapest high-volume chat
  • Self-hosting (weights not confirmed open)

Research papers

Same family

GLM 5

Alternatives

other vendors · similar capability

Using GLM 5.3 at volume?

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