Compare · ModelsLive · 2 picked · head to head
Claude Opus 5.5 vs GLM 4.5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 5.5 wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · Claude Opus 5.5 · GLM 4.5 are still filling in scores.
Hype vs Reality
Attention vs performance
Claude Opus 5.5
#3 by perf·#6 by attention
GLM 4.5
#22 by perf·#3 by attention
Best value
GLM 4.5
7.2x better value than Claude Opus 5.5
Claude Opus 5.5
6.9 pts/$
$12.00/M
GLM 4.5
49.4 pts/$
$1.40/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
z-ai
private · undisclosed
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 | |
| $0.60 | $2.20 | 131K tokens (~66 books) | $10.00 |
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