Compare · ModelsLive · 2 picked · head to head
GLM 4.5 vs gpt-oss-20b
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GLM 4.5 wins on 1/1 benchmarks
GLM 4.5 wins 1 of 1 shared benchmarks. Leads in arena.
Category leads
arena·GLM 4.5
Hype vs Reality
Attention vs performance
GLM 4.5
#23 by perf·no signal
gpt-oss-20b
#29 by perf·no signal
Best value
gpt-oss-20b
16.1x better value than GLM 4.5
GLM 4.5
49.4 pts/$
$1.40/M
gpt-oss-20b
797.6 pts/$
$0.08/M
Vendor risk
Who is behind the model
z-ai
private · undisclosed
OpenAI
$840.0B·Tier 1
Head to head
1 benchmark · 2 models
GLM 4.5gpt-oss-20b
Chatbot Arena Elo · Overall
GLM 4.5 leads by +93.4
GLM 4.5
1410.9
gpt-oss-20b
1317.6
Full benchmark table
| Benchmark | GLM 4.5 | gpt-oss-20b |
|---|---|---|
Chatbot Arena Elo · Overall | 1410.9 | 1317.6 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.60 | $2.20 | 131K tokens (~66 books) | $10.00 | |
| $0.03 | $0.14 | 131K tokens (~66 books) | $0.57 |