Compare · ModelsLive · 2 picked · head to head
Claude Sonnet 4.5 vs GLM 5.3 Flash
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GLM 5.3 Flash wins on 8/9 benchmarks
GLM 5.3 Flash wins 8 of 9 shared benchmarks. Leads in reasoning · knowledge · math.
Category leads
reasoning·GLM 5.3 Flashknowledge·GLM 5.3 Flashmath·GLM 5.3 Flashgeneral·Claude Sonnet 4.5
Hype vs Reality
Attention vs performance
Claude Sonnet 4.5
#221 by perf·#11 by attention
GLM 5.3 Flash
#151 by perf·#3 by attention
Best value
GLM 5.3 Flash
193.1x better value than Claude Sonnet 4.5
Claude Sonnet 4.5
4.2 pts/$
$9.00/M
GLM 5.3 Flash
813.2 pts/$
$0.06/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
z-ai
private · undisclosed
Head to head
9 benchmarks · 2 models
Claude Sonnet 4.5GLM 5.3 Flash
ARC-AGI
GLM 5.3 Flash leads by +27.3
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Sonnet 4.5
63.7
GLM 5.3 Flash
91.0
ARC-AGI-2
GLM 5.3 Flash leads by +52.2
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Claude Sonnet 4.5
13.6
GLM 5.3 Flash
65.8
Chess Puzzles
GLM 5.3 Flash leads by +11.6
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Sonnet 4.5
5.3
GLM 5.3 Flash
16.9
FrontierMath-Tier-4-v2-Private
GLM 5.3 Flash leads by +14.6
Claude Sonnet 4.5
2.4
GLM 5.3 Flash
17.1
FrontierMath-Tiers-1-3-v2-Private
GLM 5.3 Flash leads by +33.6
Claude Sonnet 4.5
25.1
GLM 5.3 Flash
58.7
GPQA diamond
GLM 5.3 Flash leads by +10.9
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Sonnet 4.5
79.6
GLM 5.3 Flash
90.5
Mystery Game Puzzles
Claude Sonnet 4.5 leads by +8.6
Claude Sonnet 4.5
8.6
GLM 5.3 Flash
0.0
OTIS Mock AIME 2024-2025
GLM 5.3 Flash leads by +16.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Sonnet 4.5
77.8
GLM 5.3 Flash
93.9
Proofbench
GLM 5.3 Flash leads by +2.0
Claude Sonnet 4.5
19.0
GLM 5.3 Flash
21.0
Full benchmark table
| Benchmark | Claude Sonnet 4.5 | GLM 5.3 Flash |
|---|---|---|
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 63.7 | 91.0 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 13.6 | 65.8 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 5.3 | 16.9 |
FrontierMath-Tier-4-v2-Private | 2.4 | 17.1 |
FrontierMath-Tiers-1-3-v2-Private | 25.1 | 58.7 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 79.6 | 90.5 |
Mystery Game Puzzles | 8.6 | 0.0 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 77.8 | 93.9 |
Proofbench | 19.0 | 21.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $3.00 | $15.00 | 1.0M tokens (~500 books) | $60.00 | |
| $0.04 | $0.08 | 1.0M tokens (~524 books) | $0.50 |