Compare · ModelsLive · 2 picked · head to head
Claude Opus 4.8 vs GLM 4.5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 4.8 wins on 1/1 benchmarks
Claude Opus 4.8 wins 1 of 1 shared benchmarks. Leads in arena.
Category leads
arena·Claude Opus 4.8
Hype vs Reality
Attention vs performance
Claude Opus 4.8
#75 by perf·#9 by attention
GLM 4.5
#22 by perf·#3 by attention
Best value
GLM 4.5
13.4x better value than Claude Opus 4.8
Claude Opus 4.8
3.7 pts/$
$15.00/M
GLM 4.5
49.4 pts/$
$1.40/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
z-ai
private · undisclosed
Head to head
1 benchmark · 2 models
Claude Opus 4.8GLM 4.5
Chatbot Arena Elo · Overall
Claude Opus 4.8 leads by +63.3
Claude Opus 4.8
1474.5
GLM 4.5
1411.3
Full benchmark table
| Benchmark | Claude Opus 4.8 | GLM 4.5 |
|---|---|---|
Chatbot Arena Elo · Overall | 1474.5 | 1411.3 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $25.00 | 1.0M tokens (~500 books) | $100.00 | |
| $0.60 | $2.20 | 131K tokens (~66 books) | $10.00 |