Compare / Meta vs Z.ai

AI labs compared · October 2026

Meta vs Z.ai: which AI lab is ahead?

Each lab's best model on sale goes head to head on every kind of work we measure, from our own benchmarks and licensed sources. 20 models in all; a lab is only as good as the model you would actually pick from it.

9 models on sale with our resultsMeta Best: Muse Spark 1.3 · newest: Muse Spark 1.3
11 models on sale with our resultsZ.ai Best: GLM-5.3 · newest: GLM-5.3-Flash
Meta wins 71 too close to callZ.ai wins 0

Kinds of work led by each lab's best model there, of the 8 both are measured on.

Results as of 8 October 2026 (catalogue release 2026-10-08-4199ce0620fe). Models on sale means listed on OpenRouter today.

Meta or Z.ai? The short answer

Meta is ahead: its best models beat Z.ai's in 7 of the 8 kinds of work both are measured on; 1 is a tie.

  • Pick Meta for product listings, marketing planning, agents and tool use, professional work, reasoning and knowledge, writing and sticking to the facts.
  • On our overall leaderboard, Muse Spark 1.3 is #6 (65 of 100) and GLM-5.3 is #16 (38).
  • Prices start at $0.058 per million tokens for Meta (Llama 3.1 8B Instruct) and $0.15 for Z.ai (GLM-4.7-Flash).

Head to head

65Muse Spark 1.3
Best Spring Prompt overall score
38GLM-5.3
48.1Muse Spark 1.3
Best Intelligence Index
44.8GLM-5.3
$2.00Muse Spark 1.3
Flagship price, per million tokens
$2.15GLM-5.3
$0.058Llama 3.1 8B Instruct
Cheapest model, per million tokens
$0.15GLM-4.7-Flash
9
Models on sale with our results
11

Each line names the model behind the number. Prices are blended, three input tokens to one output, at the developer's list price where we have read it; see every model's price. Intelligence Index from Artificial Analysis; overall score from our leaderboard.

Which lab is better for what

For each kind of work, each lab's best model there and its rank among every model on sale. Further right is better; the better rank is in green.

Product listingsTurning a sparse product feed and photos into listings that can go live 9 of 20Muse Spark 1.3 19 of 20GLM-5V-Turbo
Decks from an analysisTurning a finished analysis into a deck you could present as it is 14 of 19Muse Spark 1.3 not measured
Marketing planningPlanning a year of ad spend without overspending 12 of 19Muse Spark 1.3 16 of 19GLM-5.3
Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls 9 of 164Muse Spark 1.3 11 of 164GLM-5.3
Professional workReal tasks from banking, consulting and law, business documents and freelance projects 8 of 51Muse Spark 1.3 15 of 51GLM-5.3
Reasoning and knowledgeHard questions across science, maths and general knowledge 8 of 198Muse Spark 1.3 25 of 198GLM-5.3
WritingWhat people prefer in blind comparisons, and judged writing quality 5 of 188Muse Spark 1.3 23 of 188GLM-5.3
Sticking to the factsSummarising without inventing things, and factual answers 11 of 152Muse Spark 1.3 30 of 152GLM-5.3-Flash
Speed under pressureGood decisions against a real clock (fast chess) 19 of 22Muse Spark 1.3 19 of 22GLM-5.3

Every model, by intelligence and price

Each dot is a model on sale with an Intelligence Index from Artificial Analysis. Up is smarter; left is cheaper. Hover or tap a dot for its name.

MetaZ.ai

0204060 $0.01$0.1$1$10 Price per million tokens, blended (log scale) Intelligence Index Muse Spark 1.3Muse Spark 1.2Muse Spark 1.1GLM-5.3GLM-5.3-FlashGLM-5.2

On our overall leaderboard

The 3 of their models we rank overall: one score out of 100 across everything we publish (how the score works). Only models with enough of our own results are ranked.

  1. #6Muse Spark 1.365
  2. #16GLM-5.338
  3. #21GLM-5V-Turbo11

Benchmark by benchmark

The headline result of every benchmark both labs have models on: each lab's best model and its rank among the models on sale. Green marks the better rank.

MeasureMetaZ.ai
Agents and tool use
Berkeley Function Calling Leaderboard (BFCL) V4 · Overall accuracy · BFCL% correct, higher is better 31.9%Llama 3.3 70B Instruct · 26 of 3872.4%GLM-4.6 · 3 of 38
Artificial Analysis · Terminal-Bench 4.0% of tasks, higher is better 33.3%Muse Spark 1.3 · 14 of 10541.9%GLM-5.3 · 9 of 105
Artificial Analysis · Terminal-Bench 2.1% of tasks, higher is better 85.4%Muse Spark 1.3 · 10 of 11584.3%GLM-5.3-Flash · 14 of 115
Artificial Analysis · τ-bench banking% of tasks, higher is better 50.5%Muse Spark 1.3 · 2 of 11350.3%GLM-5.3 · 3 of 113
Vending-Bench 2 · Money after a yearUS dollars, higher is better $6,520Muse Spark 1.1 · 13 of 56$8,314GLM-5.2 · 7 of 56
Marketing planning
ROASBench · Overall scorescore out of 100, higher is better 34.1Muse Spark 1.3 · 12 of 1924.8GLM-5.3 · 16 of 19
Product listings
CatalogBench · Reliably publish-ready% of products, higher is better 48.2%Muse Spark 1.3 · 7 of 201.8%GLM-5V-Turbo · 19 of 20
CatalogBench · Reliably publish-ready · sales brief% of products, higher is better 10.7%Muse Spark 1.3 · 9 of 200.0%GLM-5V-Turbo · 18 of 20
Professional work
APEX-Agents · Tasks passed% of tasks, higher is better 57.8%Muse Spark 1.3 · 12 of 3756.6%GLM-5.3 · 13 of 37
GDP.pdf · Professional document tasks% of rubric, higher is better 27.6%Muse Spark 1.3 · 5 of 3114.0%GLM-5.3-Flash · 24 of 31
Reasoning and knowledge
Artificial Analysis · Artificial Analysis Intelligence Indexindex score, higher is better 48.1Muse Spark 1.3 · 8 of 19844.8GLM-5.3 · 14 of 198
Artificial Analysis · Humanity's Last Exam% of questions, higher is better 48.7%Muse Spark 1.3 · 10 of 19742.3%GLM-5.3 · 30 of 197
Artificial Analysis · GPQA Diamond% of questions, higher is better 94.1%Muse Spark 1.3 · 5 of 18791.7%GLM-5.3 · 24 of 187
Speed under pressure
BulletBench · Ladder Elo · Bullet 60sladder Elo, higher is better 33Muse Spark 1.3 · 17 of 2033GLM-5.3 · 17 of 20
Sticking to the facts
Vectara Hallucination Leaderboard · Hallucination rate · Vectara% of summaries, lower is better 7.7%Llama 4 Scout · 27 of 799.3%GLM-4.7-Flash · 35 of 79
Arena (formerly LMArena) · Overall · Text factualityArena rating, higher is better 1,483Muse Spark 1.2 · 9 of 1131,467GLM-5.3 · 24 of 113
SimpleQA Verified (Epoch AI) · Correct answers% of questions, higher is better 60.3%Muse Spark 1.2 · 15 of 7341.0%GLM-5.3 · 41 of 73
Writing
Arena (formerly LMArena) · Overall · TextArena rating, higher is better 1,494Muse Spark 1.3 · 7 of 1661,478GLM-5.3 · 21 of 166
UGI Leaderboard · Writing score · UGIscore out of 100, higher is better 26.7Llama 4 Scout · 120 of 13867.0GLM-5.2 · 18 of 138

Their models, one against one

Quick answers

Is Meta or Z.ai better?

Meta is ahead: its best models beat Z.ai's in 7 of the 8 kinds of work both are measured on; 1 is a tie.

What is Meta's best model?

Muse Spark 1.3: #6 on the Spring Prompt overall leaderboard and 48.1 on the Artificial Analysis Intelligence Index.

What is Z.ai's best model?

GLM-5.3: #16 on the Spring Prompt overall leaderboard and 44.8 on the Artificial Analysis Intelligence Index.

Which is better for agents and tool use, Meta or Z.ai?

Meta: its best model there, Muse Spark 1.3, ranks 9 of 164 models on sale, against 11 for Z.ai's GLM-5.3.

Which is better for reasoning and knowledge, Meta or Z.ai?

Meta: its best model there, Muse Spark 1.3, ranks 8 of 198 models on sale, against 25 for Z.ai's GLM-5.3.

Which is better for writing, Meta or Z.ai?

Meta: its best model there, Muse Spark 1.3, ranks 5 of 188 models on sale, against 23 for Z.ai's GLM-5.3.

Which is cheaper, Meta or Z.ai?

Meta's cheapest model with results, Llama 3.1 8B Instruct, costs $0.058 per million tokens (three input to one output), against $0.15 for GLM-4.7-Flash from Z.ai.

Other labs compared

Which model is best for your product?

Benchmarks aren't your data. We test the models from Meta, Z.ai and the rest on your own tasks, with the cost of every answer.

Talk to usSee the leaderboard