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  1. Home
  2. Models
  3. GLM 5.3 Prime
Updated Sep 25, 2026
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Openings

How GLM 5.3 Prime starts an answer

The first lines of 5 of its 11 written answers. Formatting stripped, words untouched.

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

1,847 words
48-Hour Action Plan First, the governing principle One number matters more than all others: 4 million patients × 1/8,000 = ~500 patients at risk of liver failure over 5 years — some may already be experiencing it right now. Every decision below flows from this.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,694 words
Contract Analysis: Clauses Exploitable Against the Contractor This contract is heavily one-sided. Nearly every clause contains traps. Here's a clause-by-clause analysis. Scope — "modify at any time without additional compensation" Problem: This is effectively an unlimited unilateral amendment power.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

1,397 words
Architecture Review: Real-Time Collaborative Editor Critical Issues Client-clock timestamps for last-write-wins (LWR) Problem: Client clocks are unreliable (skew, manual changes, timezone bugs). A user with a fast clock always wins; a slow clock's edits are silently dropped.
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

1,192 words
The Software Engineer You've probably got a mental model of "predict the next token" as something like autocomplete on your phone — a lookup table with good caching. That intuition is wrong in an interesting way.
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Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

1,086 words
IC Memo: LedgerLift (LLLT) — B2B Spend Management SaaS Analyst: L/S Equity Fund Date: Internal draft Fictional exercise — not investment advice Recommendation SHORT. 12-month price target range: $32–$40 (current: $46).
Read the full answer

Compare GLM 5.3 Prime

GLM 5.3 Prime vs Ox Alpha16 shared prompts · Landed Aug 2026
GLM 5.3 Prime vs MiniMax M316 shared prompts · Landed Jun 2026
GLM 5.3 Prime vs Qwen3.8 Max Prime16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Claude Opus 5.516 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs GPT-6 Luna Pro16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs GPT-6 Sol Pro16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs GPT-6 Luna16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Qwen3.8 Max (0902)16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Mercury 2.516 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Ling 3.0 Flash Fin (free)16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Ling 3.0 Flash Sante (free)16 shared prompts · Landed Sep 2026
GLM 5.3 Prime vs Muse Spark 1.316 shared prompts · Landed Sep 2026

Prompts GLM 5.3 Prime answered

  • Debug This Architecturereasoning
  • Ethical Dilemma with Stakeholdersreasoning
  • Startup Pitch Teardownreasoning
  • Advanced Investment Memo (IC Memo)financial modeling
  • Michelin Star Recipe Designplanning
  • Adversarial Contract Reviewreasoning

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GLM 5.3 Prime

GLM 5.3 Prime

A faster serving variant of GLM 5.3 with the same capabilities. It accepts text, supports tool calling and reasoning, and provides a one-million-token context.

Ranks#2Business Strategy#2Travel Planning#3Health & Longevity#3Recipes & Cooking#4Practical Tasks#4Summarization
OpenRouterDocs
Provider
Z.ai
Released
2026-09-23
Size
LARGE
Free API (OpenRouter)
No
Per 1M tokens
$2.8 in · $8.8 out
Rival’s tab
$0.20
16/16 receipts survived

Free API availability

No free endpoint for GLM 5.3 Prime was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 25 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"z-ai/glm-5.3-prime"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

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Model Responses

11 outputs · $0.20 tracked across 11 receipts

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