Compare · ModelsLive · 2 picked · head to head
GLM 5.2 vs gpt-oss-20b
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GLM 5.2 wins on 8/8 benchmarks
GLM 5.2 wins 8 of 8 shared benchmarks. Leads in speed · arena · knowledge.
Category leads
speed·GLM 5.2arena·GLM 5.2knowledge·GLM 5.2general·GLM 5.2math·GLM 5.2coding·GLM 5.2
Hype vs Reality
Attention vs performance
GLM 5.2
#75 by perf·#3 by attention
gpt-oss-20b
#106 by perf·no signal
Best value
gpt-oss-20b
40.2x better value than GLM 5.2
GLM 5.2
16.5 pts/$
$3.40/M
gpt-oss-20b
665.0 pts/$
$0.08/M
Vendor risk
Who is behind the model
z-ai
private · undisclosed
OpenAI
$840.0B·Tier 1
Head to head
8 benchmarks · 2 models
GLM 5.2gpt-oss-20b
Artificial Analysis · Quality Index
GLM 5.2 leads by +42.1
GLM 5.2
51.1
gpt-oss-20b
9.0
Chatbot Arena Elo · Overall
GLM 5.2 leads by +153.4
GLM 5.2
1471.0
gpt-oss-20b
1317.6
Chess Puzzles
GLM 5.2 leads by +17.9
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GLM 5.2
17.9
gpt-oss-20b
0.0
Dtbench
GLM 5.2 leads by +42.7
GLM 5.2
89.3
gpt-oss-20b
46.7
GPQA diamond
GLM 5.2 leads by +43.1
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GLM 5.2
92.9
gpt-oss-20b
49.7
Lmca
GLM 5.2 leads by +36.8
GLM 5.2
53.9
gpt-oss-20b
17.1
OTIS Mock AIME 2024-2025
GLM 5.2 leads by +21.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GLM 5.2
86.4
gpt-oss-20b
65.2
WeirdML
GLM 5.2 leads by +29.2
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GLM 5.2
70.1
gpt-oss-20b
40.9
Full benchmark table
| Benchmark | GLM 5.2 | gpt-oss-20b |
|---|---|---|
Artificial Analysis · Quality Index | 51.1 | 9.0 |
Chatbot Arena Elo · Overall | 1471.0 | 1317.6 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 17.9 | 0.0 |
Dtbench | 89.3 | 46.7 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 92.9 | 49.7 |
Lmca | 53.9 | 17.1 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 86.4 | 65.2 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 70.1 | 40.9 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.01 | $6.80 | 1.0M tokens (~524 books) | $17.05 | |
| $0.03 | $0.13 | 131K tokens (~66 books) | $0.55 |