Our pickClaude (Anthropic)
GLM / Z.ai (Zhipu AI)
Tier-list head-to-head. Claude (Anthropic) takes the A-tier slot — here's the breakdown.
Spec sheet
| Claude (Anthropic) | GLM / Z.ai (Zhipu AI) | |
|---|---|---|
| Tier | A-tierwin | A-tier |
| Overall score | 8.5 / 10win | 8.0 / 10 |
| Free tier | Yes | Yes |
| Starting price | $0 | $0 |
| Best for | Writers, analysts, developers, and anyone who values quality of output over quantity of features. | Teams that need genuine MIT-licensed frontier open weights with no commercial strings. |
| Last reviewed | 2026-05-26 | 2026-04-17 |
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 thoughtful consultant”
“The Z.ai research model”
What you'll pay
Look past the headline number -- entry-tier limits drive most cost surprises.
Free tier available
Free tier available
Claude Opus 4.7 (4.6 baseline scores shown; 4.7 announced 13% coding lift, 3x production task completion) vs GLM-5.1 (744B MoE / 40B active)
| Benchmark | Claude (Anthropic) | GLM / Z.ai (Zhipu AI) |
|---|---|---|
| GPQA Diamond | 91.3% | 74.5% |
| HumanEval | 94% | 89.1% |
The decision
Use-case anchors and category strengths, side by side.
Writers, analysts, developers, and anyone who values quality of output over quantity of features. If you care about how good the actual text is, Claude is the best.
Visit Claude (Anthropic)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)Bottom line
Claude (Anthropic) edges out GLM / Z.ai (Zhipu AI) by 0.5 points (8.5 vs 8.0) -- a A-tier vs A-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for Claude (Anthropic)'s strengths, so if those categories are your priority, the lead translates.
Pricing-wise, both tools have a free tier (Claude (Anthropic) starts $0, GLM / Z.ai (Zhipu AI) starts $0), 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 Claude (Anthropic) when writers, analysts, developers, and anyone who values quality of output over quantity of features. Pick GLM / Z.ai (Zhipu AI) when teams that need genuine mit-licensed frontier open weights with no commercial strings. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Claude (Anthropic)'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: Claude (Anthropic) is the safer default for most readers, but GLM / Z.ai (Zhipu AI) is competitive enough that the tie-breaker is your specific workload, not the spec sheet.
Keep digging
Full Claude (Anthropic) review
Tier A · 8.5/10
Full GLM / Z.ai (Zhipu AI) review
Tier A · 8.0/10
Claude (Anthropic) alternatives
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GLM / Z.ai (Zhipu AI) alternatives
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Built from our daily AI-tool sweep, last touched May 26, 2026. Honest tier-list reviews — no affiliate-link pieces disguised as advice. See the rubric or how we review.