GLM-5.1 API Pricing
Zhipu AI · released 2026-04-07
Also searched as: GLM 5.1 pricing
GLM-5.1 price
0.090¢ / 1K
0.359¢ / 1K
0.157¢ / 1K
Compare the two price sources — models.dev repository, docs.z.ai (cited by LiteLLM)
Sources disagree; check the official site; Higher rates apply above a context threshold; see the official site
Official list price from Zhipu AI, as recorded by models.dev
Official price changed on 2026-11-06: input $1.40 → $0.8964 (-36.0%) · output $4.40 → $3.5855 (-18.5%) per 1M tokens. All official price changes
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.152¢ |
| RAG query | 4,000 in / 500 out | 0.538¢ |
| Long document summary | 50,000 in / 1,000 out | $0.0484 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.0341 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $45.71 |
Cost = (input tokens ÷ 1,000,000 × $0.8964) + (output tokens ÷ 1,000,000 × $3.5855).
Benchmarks
| Benchmark | Value | Source | As of |
|---|---|---|---|
| Epoch Capabilities Index (ECI) | 150.7 | epoch | 2026-04-07 |
| Epoch Mock AIME accuracy | 93.3% | epoch | 2026-04-07 |
| Epoch FrontierMath (T1–3) accuracy | 36.8% | epoch | 2026-04-07 |
| Arena text rating | 1465 | arena | 2026-11-06 |
| Arena coding rating (human preference votes, not task accuracy) | 1513 | arena | 2026-11-06 |
| Arena math rating | 1475 | arena | 2026-11-06 |
| Arena WebDev rating | 1508 | arena | 2026-11-06 |
Similar ECI, lower price
| Model | ECI | Blended $/1M |
|---|---|---|
| GLM-5.3-Flash | 153.6 | $0.1942 |
| GPT-5.4 nano | 146.4 | $0.4625 |
| DeepSeek V4 Flash | 146.9 | $0.525 |
| MiniMax-M3 | 147.6 | $0.525 |
| GPT-5 Mini | 146.1 | $0.6875 |
More from Zhipu AI
| Model | Released | Blended $/1M |
|---|---|---|
| GLM-5.3-Flash | 2026-08-26 | $0.1942 |
| GLM-5.3 | 2026-08-14 | $1.9421 |
| GLM-5.2 | 2026-06-13 | $1.9421 |
| GLM-5V-Turbo | 2026-04-01 | $1.3819 |
| GLM-5-Turbo | 2026-03-16 | $1.3819 |
| GLM-5 | 2026-02-12 | $1.1205 |
| GLM-4.7-FlashX | 2026-01-19 | $0.1681 |
| GLM-4.7-Flash | 2026-01-19 | — |
Count tokens & estimate cost for GLM-5.1 See GLM-5.1 on the leaderboard
Prices: Zhipu AI's official list price as recorded by models.dev; benchmarks: see sources below; last synced 2026-11-07.
FAQ
Who develops GLM-5.1?
GLM-5.1 is developed by Zhipu AI, released 2026-04-07.
How much does GLM-5.1 cost per million tokens?
GLM-5.1 costs $0.8964 per 1M input tokens and $3.5855 per 1M output tokens ($1.5686 blended), per Zhipu AI's official list price as recorded by models.dev.
What is the GLM-5.1 API price?
The GLM-5.1 API price is $0.8964 per 1M input tokens and $3.5855 per 1M output tokens ($1.5686 per 1M blended).
How much does GLM-5.1 cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.152¢ on GLM-5.1, at $0.8964/1M input and $3.5855/1M output.
Is GLM-5.1 free?
GLM-5.1's official API list price is $0.8964 per 1M input tokens and $3.5855 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check Zhipu AI's site for those.
How does GLM-5.1 rank on benchmarks?
GLM-5.1 scores 150.7 on the Epoch Capabilities Index (ECI), ranking #56 of 107 models we track with a published ECI score.
Is there a cheaper model with a similar ECI to GLM-5.1?
Yes — GLM-5.3-Flash scores a similar ECI (153.6) at $0.1942/1M blended, versus $1.5686/1M for GLM-5.1.
Where does this data come from?
Pricing for GLM-5.1 comes from models.dev and LiteLLM (open MIT-licensed catalogs); benchmark scores come from Epoch AI and LMArena (open CC BY 4.0 licenses) — see /data-sources/. Last synced 2026-11-07.