GLM Coding Plan

tom@tomrochette.com (Tom Rochette) — Sat, 26 Sep 2026 00:00:00 +0000

The GLM Coding Plan is Z.ai’s subscription that sells access to the GLM model family inside coding agents, currently $18/$80/$168 per month for Lite/Pro/Max. It is the cheapest quota-per-dollar coding subscription I verified, but a multiplier system governs the quota, so the sticker price is only the start of the math. Facts below verified as of 2026-09-26.

What it is
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A credit-based subscription from Z.ai (Zhipu) for GLM-5.3 and GLM-5.3-Flash, consumed inside supported coding tools (Claude Code, Cline, OpenCode, Kilo Code, Cursor, Z.ai’s own ZCode, and others). You point the tool at Z.ai’s Anthropic- or OpenAI-compatible endpoints with a plan key, and requests to older GLM versions are auto-routed to 5.3. Plans bundle exclusive MCP servers (vision, web search, web reader, Zread). Usage outside officially supported tools is contractually prohibited, which makes this a walled-garden subscription rather than an API credit pack.

Status
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Actively developed and restructured twice in a year: prompt-based plans at launch in 2025, then a credits-based system for new subscribers on July 30, 2026, with legacy plans grandfathered to the end of their billing cycle. The plan rode the GLM release cadence (GLM-4.5 in 2025, GLM-5.2 in June 2026, GLM-5.3 in August 2026), and tier prices rose at each step. Promotional quota mechanics (off-peak discounts, Flash campaigns) changed repeatedly through 2026, so published value figures have a short shelf life. I found no reliable subscriber counts.

Strengths
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Quota per dollar is unmatched in this category: Z.ai itself documents quota worth approximately 15-30x the monthly fee at API rates.
Lite at $18, or $12.60 effective on yearly billing, undercuts every $20 rival I checked.
Off-peak usage (outside Mon-Fri 14:00-18:00 UTC+8) deducts credits at 50%, a standing discount for most time zones.
Hard-stop quota means spend is fixed: when quota runs out, calls pause and your account balance is never touched.

Cautions
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Subscriptions are non-refundable once purchased, per the official FAQ.
The flagship model burns quota up to 3x faster at peak (a usage multiplier, not a price change), so effective throughput can be a third of the headline prompts.
Strict supported-tools-only terms and special endpoints block custom integrations.
Third-party reviewers report slow and unreliable periods under load, and prompts route through China-based infrastructure, a blocker for residency-bound teams.

Pricing
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Current tiers as of 2026-09-26: Lite $18/month (per Z.ai docs), Pro $80 and Max $168 per August 2026 snapshots of the subscribe page, with 20% off quarterly and 30% off yearly billing (effective $12.60/$56/$117.60 per month). The July 2026 credits system allocates 2,000/10,000 credits per 5 hours/week on Lite, 12,000/60,000 on Pro, 28,000/140,000 on Max. Credits deduct per token type with multipliers (GLM-5.3: input 6.9, cached input 1.7, output 24, over 10,000), plus per-call charges for bundled MCP tools. Under the legacy prompts system, Z.ai documented quota as roughly 80/400/1,600 prompts per 5-hour window, with one prompt estimated at 15-20 model invocations.

Price history
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Date	Plan	Change	Source
2025-09	Lite / Pro	Baseline: launched at $6/$30 per month with first-month promos of $3/$15	Cline blog, Sep 18, 2025
2026-06-18	Lite / Pro / Max	List prices $18/$72/$160, yearly effective $12.60/$50.40/$112	HyScaler
2026-07-30	All plans	Credits-based plans replace prompt-based plans for new subscribers	docs.z.ai usage-revision notice
2026-08-14	Lite / Pro / Max	Pro to $80 and Max to $168; 20% quarterly and 30% yearly discounts	emergent.sh

Compared to
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- Cerebras Code sells speed at $50/$200; choose it when latency dominates, GLM when volume per dollar dominates.
- Chutes sells cheap pay-as-you-go across many model families; choose it for flexibility, GLM for a large fixed quota on one frontier family.
Z.ai’s own ZCode is the intended surface, but any supported harness works with the same quota.

Bottom line
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Recommended for high-volume, human-in-the-loop coding where quota per dollar is the binding constraint and you can work off-peak. Not for long-horizon autonomous agent runs (aggregator tracking puts GLM-5.2 at about half of Claude Opus 4.8’s SWE-Marathon score), Claude-ecosystem power users, or residency-bound teams. Claim to disagree with: the rational entry is a single month of $18 Lite and never the discounted yearly plan, because the plan is non-refundable and its terms changed twice in a year.

Changes
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2026-09-26 - Created.

References
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https://docs.z.ai/devpack/overview - current credit allowances (2,000/12,000/28,000 per 5h), credit formula, off-peak 50% rule, “starting at 18 USD” (fetched, HTTP 200).
https://docs.z.ai/devpack/notice/usage-revision - July 30, 2026 credits transition; legacy 15-30x value claim and per-plan prompt ceilings (fetched, HTTP 200).
https://docs.z.ai/devpack/faq - non-refundable policy, supported-tools restriction, no balance deduction, quota reset cards (fetched, HTTP 200).
https://cline.bot/blog/zai-cline-3-dollar-ai-coding - launch-era pricing: $6/$30 with $3/$15 first-month promos, 120/600 prompts per 5 hours (fetched, HTTP 200, Sep 18, 2025).
https://hyscaler.com/insights/glm-coding-plan-review/ - June 2026 tiers at $18/$72/$160, 3x peak multiplier, competitive framing (fetched, HTTP 200).
https://www.digitalapplied.com/blog/glm-coding-plan-worth-it-2026-value-analysis - critical analysis, Jul 3, 2026: multiplier math, non-refundability, China residency, long-horizon benchmark gap (fetched, HTTP 200).
https://emergent.sh/learn/glm-5-3-pricing - August 2026 tiers at $18/$80/$168 with yearly equivalents; GLM-5.3 has no per-token API rate yet (fetched, HTTP 200).

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GLM Coding Plan

What it is
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Status
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Strengths
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Cautions
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Pricing
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Price history
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Compared to
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Bottom line
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Changes
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See also
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References
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subscription on tomrochette.com

GLM Coding Plan

What it is #

Status #

Strengths #

Cautions #

Pricing #

Price history #

Compared to #

Bottom line #

Changes #

See also #

References #

What it is
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Status
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Strengths
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Cautions
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Pricing
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Price history
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Compared to
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Bottom line
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Changes
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See also
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References
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