GLM Coding Plan vs DeepSeek API
A subscription with a quota window against raw tokens with no window at all — and two very different experiences at the payment page.
Updated August 28, 2026 · Independent comparison — GLM Coding Plan, DeepSeek API are separate products.
GLM Coding Plan
Z.ai's GLM-5.3 subscription for coding tools
The GLM Coding Plan is Z.ai's subscription for driving coding agents with GLM-5.3 and GLM-5.3-Flash. It sells in three tiers (Lite, Pro, Max) that differ only in credit allowance, not in model access, and it is explicitly restricted to coding tools — the key is not a general-purpose API key. Credits refresh on a 5-hour rolling window and a weekly window, and off-peak usage (outside Mon-Fri 14:00-18:00 UTC+8) burns credits at half rate. Z.ai relaunched the tier pricing on 2026-07-31, so list prices differ noticeably between its CNY and USD storefronts.
DeepSeek API
DeepSeek's raw pay-per-token API
The DeepSeek API is the unadorned version of this market: no subscription, no quota window, just a prepaid balance drawn down per token across DeepSeek V4 Pro, V4 Flash and the experimental vision Flash. It offers a full 1M context with up to 384K output tokens, exposes OpenAI-, Anthropic- and Responses-compatible endpoints, and prices off-peak hours at half rate. Concurrency is generous (500 for Pro, 2,500 for Flash). The catch is getting money in: the console is China-first and international cards are frequently declined.
Bottom line
A subscription with a quota window against raw tokens with no window at all — and two very different experiences at the payment page. Choose GLM Coding Plan if you want a fixed monthly bill and a quota you can plan against; choose DeepSeek API if you want the full 1M context with up to 384K output tokens, guaranteed.
Pricing
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Price/mo | Lite $18 · Pro $72-80 · Max $160-168/mo | No monthly fee — prepaid per token |
| Intro promo | ~20-30% off on the CNY store and on quarterly/yearly terms | New-account credit grant is commonly reported; confirm in console |
| Billing shape | Credits on 5-hour + weekly windows | Per-token |
Models & Context
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Models included | GLM-5.3, GLM-5.3-Flash (older GLM auto-routes up) | DeepSeek V4 Pro, V4 Flash, V4 Flash Vision (experimental) |
| Catalogue size | 2 models (one lab) | 3 models (one lab) |
| Context window | Per model; no plan-level max published | 1M context, up to 384K output tokens |
Limits & Overage
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Limits (5h / weekly / monthly) | 2,000 / 12,000 / 28,000 credits per 5 hrs; 10,000 / 60,000 / 140,000 weekly | None — concurrency caps of 500 (Pro) / 2,500 (Flash) |
| What happens past the cap | Hard 429 until the window resets (errors 1308/1310/1316/1317) | Hard stop at zero balance; no overage invoice |
| Parallel-agent friendly | Not published | Yes, up to the concurrency cap |
Access & Friction
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Host agents & IDEs supported | Claude Code, Cline, Roo Code, Kilo Code, OpenCode, OpenClaw, Crush, Goose, Cursor, ZCode | Any OpenAI- or Anthropic-compatible agent |
| Gives you an API key | Coding Plan key — tool-restricted, not a general API key | Raw platform key — fully BYOK-able anywhere |
| BYOK-able elsewhere | ✗ | ✓ |
| Payment / region friction | Cards internationally; Alipay/WeChat on the CN store; no app-backend use | China-first console; international cards are frequently declined |
Verdict at a glance
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Best for | Cheapest official GLM-5.3 pass for supported agents | Cheapest official V4 tokens, if you can fund the account |
Practical friction
| Feature | GLM Coding Plan | DeepSeek API |
|---|---|---|
| Key usable for application backends | ✗ | ✓ |
| Guaranteed context | Not published | 1M in, 384K out |
| International payment | Cards work internationally | Frequently declined |
| Concurrency | Not published | 500 (Pro) / 2,500 (Flash) |
| Off-peak discount | 50% fewer credits | 50% off token price |
The Verdict
Choose GLM Coding Plan if...
- ✓You want a fixed monthly bill and a quota you can plan against
- ✓You want GLM-5.3 in Claude Code, Cline, Kilo, Crush, Goose or Cursor with no per-token maths
- ✓International card checkout matters — this one just works
- ✓Off-peak scheduling at half credits fits your day
Choose DeepSeek API if...
- ✓You want the full 1M context with up to 384K output tokens, guaranteed
- ✓You want a raw key with no tool restrictions and no application-backend clause
- ✓You need real concurrency — 500 parallel requests on Pro, 2,500 on Flash
- ✓Your usage is either very small or very large, where a subscription is the wrong shape
- ✓You can fund a China-first account, or already have
Frequently Asked Questions
What is the difference between GLM Coding Plan and DeepSeek API?
The GLM Coding Plan is Z.ai's subscription for driving coding agents with GLM-5.3 and GLM-5.3-Flash. The DeepSeek API is the unadorned version of this market: no subscription, no quota window, just a prepaid balance drawn down per token across DeepSeek V4 Pro, V4 Flash and the experimental vision Flash.
How much do GLM Coding Plan and DeepSeek API cost?
GLM Coding Plan: Lite $18 · Pro $72-80 · Max $160-168/mo. DeepSeek API: No monthly fee — prepaid per token. See the pricing table above for full plan details.
Should I choose GLM Coding Plan or DeepSeek API?
Choose GLM Coding Plan if you want a fixed monthly bill and a quota you can plan against. Choose DeepSeek API if you want the full 1M context with up to 384K output tokens, guaranteed.
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