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GLM-5.1 vs Nemotron 3 Ultra 550B A55B

Z.ai · released

Wins 5 of 7 areas

Coding · Agents · Reasoning · Facts · Math

NVIDIA · released

Wins 2 of 7 areas

Long documents · Following instructions

GLM-5.1 is the stronger all-rounder.Nemotron 3 Ultra 550B A55B is cheaper and better at long documents.

Both rank among the ten best models we track in following instructions.

Scores updated · 48 tests both models report · How we compare

Where each one wins

Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

Long documents and following instructions rest on a single test each.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

GLM-5.1$1.38 to read · $4.40 to write$5.78Price from Artificial Analysis
Nemotron 3 Ultra 550B A55B$0.60 to read · $2.70 to write$3.30Price from Artificial Analysis

Nemotron 3 Ultra 550B A55B costs 43% less for the same work.

The biggest differences

The three tests each model wins by the widest margin. Scores are out of 100.

Where GLM-5.1 pulls ahead

  • Finds hard-to-locate facts by browsing the webBrowseComp+34.9points aheadGLM-5.179.3Nemotron 3 Ultra 550B A55B44.4
  • Multi-step tasks using many real software toolsMCP Atlas+27.1points aheadGLM-5.171.8Nemotron 3 Ultra 550B A55B44.7
  • Common-sense trick questionsSimpleBench+13.4points aheadGLM-5.155.1Nemotron 3 Ultra 550B A55B41.7

Where Nemotron 3 Ultra 550B A55B pulls ahead

  • Olympiad math problems with short answersIMOAnswerBench+8.5points aheadNemotron 3 Ultra 550B A55B92.3GLM-5.183.8
  • Reasons across sets of long documentsAA-LCR+5.6points aheadNemotron 3 Ultra 550B A55B79.3GLM-5.173.7
  • Follows unfamiliar, precisely checkable instructionsIFBench+5.1points aheadNemotron 3 Ultra 550B A55B81.4GLM-5.176.3

Every test, side by side

All 48 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingGLM-5.1

Full coding ranking

AgentsGLM-5.1

Full agents ranking

ReasoningGLM-5.1

Full reasoning ranking

FactsGLM-5.1

Full facts ranking

MathGLM-5.1

Full math ranking

Long documentsNemotron 3 Ultra 550B A55B
  • AA-LCRNemotron 3 Ultra 550B A55B by 5.673.779.3+5.6

Full long documents ranking

Following instructionsNemotron 3 Ultra 550B A55B
  • IFBenchNemotron 3 Ultra 550B A55B by 5.176.381.4+5.1

Full following instructions ranking

Other results24 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, GLM-5.1 or Nemotron 3 Ultra 550B A55B?

GLM-5.1 wins five of the seven areas where both have results: coding, agents, reasoning, facts and math. Nemotron 3 Ultra 550B A55B wins long documents and following instructions, and costs 43% less.

Which is better for coding?

GLM-5.1. It wins 6 of the 7 coding tests both models report; Nemotron 3 Ultra 550B A55B wins 1.

Which is cheaper?

GLM-5.1 costs $1.38 per million input tokens and $4.40 per million output tokens; Nemotron 3 Ultra 550B A55B costs $0.60 and $2.70. That makes Nemotron 3 Ultra 550B A55B about 43% cheaper for the same work.

How do you compare the two?

We use the 48 benchmark tests both models have published scores on. The verdict counts the 24 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 24 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.

Compare GLM-5.1 with

Z.ai

Across the field

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All comparisons