GLM / Z.ai (Zhipu AI)
Our pickKimi K3 (Moonshot)
Tier-list head-to-head. Kimi K3 (Moonshot) takes the A-tier slot — here's the breakdown.
Spec sheet
| GLM / Z.ai (Zhipu AI) | Kimi K3 (Moonshot) | |
|---|---|---|
| Tier | A-tier | A-tierwin |
| Overall score | 8.0 / 10 | 8.1 / 10win |
| Free tier | Yes | Yes |
| Starting price | $0 | $3 / $15 |
| Best for | Teams that need genuine MIT-licensed frontier open weights with no commercial strings. | Agentic coding workflows, tool-use agents, long-horizon repository work (1M context), and teams who want fr… |
| Last reviewed | 2026-07-09 | 2026-09-05 |
Head-to-head
Rated 1-10 on the same rubric across all 130 tools we cover.
Vibe check
How each tool actually sounds when you talk to it.
“The Z.ai research model”
“The long-context note-taker”
What you'll pay
Look past the headline number -- entry-tier limits drive most cost surprises.
Free tier available
Free tier available
GLM-5.2 (~753B MoE, launched 2026-06-13) -- vendor-published; third-party verification still settling vs Kimi K3 (2.8T, launched 2026-07-16) -- Arena.AI ranked it best-available at launch; vendor claims parity with Fable 5, third-party suites pending. Scores below are K2.6/K2.5-era baselines retained until K3 third-party runs publish
| Benchmark | GLM / Z.ai (Zhipu AI) | Kimi K3 (Moonshot) |
|---|---|---|
| SWE-Bench Pro | 62.1% | 58.6% |
The decision
Use-case anchors and category strengths, side by side.
Teams that need genuine MIT-licensed frontier open weights with no commercial strings. Especially strong for agentic workflows and vision (GLM-4.6V).
Visit GLM / Z.ai (Zhipu AI)Agentic coding workflows, tool-use agents, long-horizon repository work (1M context), and teams who want frontier-tier quality at a fraction of frontier pricing ($15/M output vs Fable 5's $50/M).
Visit Kimi K3 (Moonshot)Bottom line
GLM / Z.ai (Zhipu AI) (A-tier, 8.0/10) and Kimi K3 (Moonshot) (A-tier, 8.1/10) are within margin-of-error of each other on overall score. There's no decisive winner -- the right pick comes down to how you'll actually use the tool, not which scored higher in the abstract. We rate them on the same rubric (ease of use, output quality, value, features), and on this pair the rubric is calling it a draw.
Pricing-wise, both tools have a free tier (GLM / Z.ai (Zhipu AI) starts $0, Kimi K3 (Moonshot) starts $3 / $15), so you can test either without committing. Compare what each free tier actually unlocks -- usage caps, model access, and feature gates differ a lot more than the headline price suggests, especially as both vendors have tightened limits in 2026.
By use case: pick GLM / Z.ai (Zhipu AI) when teams that need genuine mit-licensed frontier open weights with no commercial strings. Pick Kimi K3 (Moonshot) when agentic coding workflows, tool-use agents, long-horizon repository work (1m context), and teams who want frontier-tier quality at a fraction of frontier pricing ($15/m output vs fable 5's $50/m). The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Kimi K3 (Moonshot)'s lane, the tier-list ranking and the use-case fit point the same direction; if you're in GLM / Z.ai (Zhipu AI)'s lane, the score gap matters less than the fit.
Bottom line: this pair is a coin flip on raw scores. Choose by use-case fit, free-tier availability, and which one you can actually try without committing. Re-evaluate in 60-90 days -- both vendors are shipping fast in 2026.
Keep digging
Full GLM / Z.ai (Zhipu AI) review
Tier A · 8.0/10
Full Kimi K3 (Moonshot) review
Tier A · 8.1/10
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Built from our daily AI-tool sweep, last touched September 5, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.