Coding GLM 5.1
Z.AI · text → text
Only supports OpenAI-compatible formats.
Input$0.06 /M
Output$0.22 /M
← ModelsCoding GLM 5.1Coding GLM 5.1 (free)
Coding GLM 5.1 vs Coding GLM 5.1 (free)
Compare Coding GLM 5.1 from Z.AI and Coding GLM 5.1 (free) 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.
Coding GLM 5.1Coding GLM 5.1 (free)+ Add model · 2/4
Coding GLM 5.1 (free)
Z.AI · text → text
coding-glm-5.1-free is the open and free version of coding-glm-5.1. To maintain reliable service, each account is limited to 5 requests per minute, 100 requests per day, and 1 million tokens per day.
Input$0 /M
Output$0 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Coding GLM 5.1
Coding GLM 5.1 (free)
Input /M
$0.06
$0
Output /M
$0.22
$0
Cache read /M
-
-
Context length
200,000
200,000
Max output
131,072
131,072
Time to First Token
9.6 s
5.8 s
Throughput
37.4 tok/s
31.2 tok/s
Modalities
text
text
Supported Parameters
thinkingtoolsfunction callingstructured outputs
thinkingtoolsfunction callingstructured outputs
API Formats
Released
April 11, 2026
April 11, 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.
coding-glm-5.1coding-glm-5.1-free
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
coding-glm-5.1coding-glm-5.1-free
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
Cost calculator
Estimate your monthly bill for the same workload on each model.
Coding GLM 5.1 (free)
$0.00 /mo
Coding GLM 5.1
$6.90 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which responds faster?
Coding GLM 5.1 (free): 5.8s 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?
Coding GLM 5.1 accepts 200,000 and Coding GLM 5.1 (free) accepts 200,000 input tokens. Maximum output per request is 131,072 tokens on Coding GLM 5.1 and 131,072 tokens on Coding GLM 5.1 (free).
Which one generates tokens faster?
Coding GLM 5.1 at 37.4 tok/s and Coding GLM 5.1 (free) at 31.2 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
Coding GLM 5.1 accepts text input and supports thinking, tool calling, function calling and structured outputs; Coding GLM 5.1 (free) accepts text input and supports thinking, tool calling, function calling and structured outputs.
Can I call Coding GLM 5.1 and Coding GLM 5.1 (free) 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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