Claude Opus 4.8 vs GLM 5.2
Price, context and benchmark scores side by side — every number from the live model catalogue.
| Claude Opus 4.8anthropic | GLM 5.2z-ai | |
|---|---|---|
| Input / 1M tokens | $5.00 | $0.741 |
| Output / 1M tokens | $25.00 | $2.33 |
| 1M in + 300K out | $12.50 | $1.44 |
| Context window | 1M | 1.0M |
| Intelligence index | 55.7 | 51.1 |
| Coding index | 74.3 | 68.8 |
| Agentic index | 47.2 | 43.1 |
| Cheapest provider | Azure | StreamLake |
| Providers serving it | 4 | 29 |
| Weights | Closed | Open |
| Image input | Yes | No |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
| Released | May 27, 2026 | Jun 16, 2026 |
Which one to pick
Pick Claude Opus 4.8 if…
- You want the higher general-intelligence score (55.7).
- Code quality is the priority — it leads on the coding index (74.3).
- You are running agent loops — higher agentic index (47.2).
Pick GLM 5.2 if…
- Token cost matters: $2.33 per 1M output vs $25.00.
- You need the bigger context window (1.0M).
- You want the option to self-host — weights are public.
- You want provider redundancy: 29 providers serve it.
FAQ
Is Claude Opus 4.8 better than GLM 5.2?
Claude Opus 4.8 scores higher on general intelligence (55.7 vs 51.1), while GLM 5.2 is 11× cheaper per output token ($2.33 vs $25.00). For code, Claude Opus 4.8 leads (74.3 coding index). GLM 5.2 takes the larger context at 1.0M.
Which is cheaper, Claude Opus 4.8 or GLM 5.2?
GLM 5.2, at $2.33 per 1M output tokens versus $25.00. On a 1M input + 300K output workload that is $1.44 against $12.50.
Can I self-host Claude Opus 4.8 or GLM 5.2?
Claude Opus 4.8: closed weights, API only. GLM 5.2: open weights (zai-org/GLM-5.2).