GLM 4.5
Z.AI · text → text
GLM-4.5
Input$0.4 /M
Output$1.6 /M
← ModelsGLM 4.5GLM 5.2
GLM 4.5 vs GLM 5.2
Compare GLM 4.5 from Z.AI and GLM 5.2 from Z.AI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GLM 4.5GLM 5.2+ Add model · 2/4
GLM 5.2
Z.AI · text → text
GLM-5.2 is Z.ai’s flagship model for the era of long-horizon tasks. With a truly usable 1M-token context window, it can handle project-level engineering context, execute long-running tasks more reliably, follow engineering standards more consistently, and complete the full development workflow from requirements to multi-platform deployment in a single task.
Input$1.1268 /M
Output$3.9438 /M
Cache read$0.2817 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GLM 4.5
GLM 5.2
Input /M
$0.4
$1.1268
Output /M
$1.6
$3.9438
Cache read /M
-
$0.2817
Context length
131,072
1,000,000
Max output
98,304
131,072
Time to First Token
0.5 s
0.7 s
Throughput
107.3 tok/s
37.0 tok/s
Modalities
text
text
Supported Parameters
thinkingtoolsfunction callingstructured outputs
API Formats
chat_completions · claude_api
Released
July 28, 2025
June 16, 2026
Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
glm-4.5glm-5.2
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
glm-4.5glm-5.2
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
LMArena Benchmarks
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Text
glm-4.5glm-5.2
1340140014601520
Overall
14111472
Coding
14551509
Math
14131476
Hard prompts
14331492
Instruction following
14051465
Multi-turn
14071469
Creative writing
13741451
Longer query
14171482
Chinese
14401517
English
14201480
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Cost calculator
Estimate your monthly bill for the same workload on each model.
GLM 4.5
$48.00 /mo
GLM 5.2
$127 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GLM 4.5, GLM 5.2?
GLM 4.5: $1.6/M output tokens; GLM 5.2: $3.9438/M. Use the cost calculator above to estimate your own workload.
How do their coding arena scores compare?
GLM 5.2: 1509; GLM 4.5: 1455 (LMArena coding leaderboard).
Which responds faster?
GLM 4.5: 0.5s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
GLM 4.5 accepts 131,072 and GLM 5.2 accepts 1,000,000 input tokens. Maximum output per request is 98,304 tokens on GLM 4.5 and 131,072 tokens on GLM 5.2.
Which one generates tokens faster?
GLM 4.5 at 107.3 tok/s and GLM 5.2 at 37.0 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
GLM 4.5 accepts text input; GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs.
Can I call GLM 4.5 and GLM 5.2 with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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