GLM 5.2 vs GPT-5.6 Terra
Price, context and benchmark scores side by side — every number from the live model catalogue.
| GLM 5.2z-ai | GPT-5.6 Terraopenai | |
|---|---|---|
| Input / 1M tokens | $0.741 | $1.25 |
| Output / 1M tokens | $2.33 | $7.50 |
| 1M in + 300K out | $1.44 | $3.50 |
| Context window | 1.0M | 1.1M |
| Intelligence index | 51.1 | 55.0 |
| Coding index | 68.8 | 76.7 |
| Agentic index | 43.1 | 47.4 |
| Cheapest provider | StreamLake | OpenAI |
| Providers serving it | 29 | 2 |
| Weights | Open | Closed |
| Image input | No | Yes |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
| Released | Jun 16, 2026 | Jul 9, 2026 |
Which one to pick
Pick GLM 5.2 if…
- Token cost matters: $2.33 per 1M output vs $7.50.
- You want the option to self-host — weights are public.
- You want provider redundancy: 29 providers serve it.
Pick GPT-5.6 Terra if…
- You want the higher general-intelligence score (55.0).
- Code quality is the priority — it leads on the coding index (76.7).
- You are running agent loops — higher agentic index (47.4).
- You need the bigger context window (1.1M).
FAQ
Is GLM 5.2 better than GPT-5.6 Terra?
GPT-5.6 Terra scores higher on general intelligence (51.1 vs 55.0), while GLM 5.2 is 3.2× cheaper per output token ($2.33 vs $7.50). For code, GPT-5.6 Terra leads (76.7 coding index). GPT-5.6 Terra takes the larger context at 1.1M.
Which is cheaper, GLM 5.2 or GPT-5.6 Terra?
GLM 5.2, at $2.33 per 1M output tokens versus $7.50. On a 1M input + 300K output workload that is $1.44 against $3.50.
Can I self-host GLM 5.2 or GPT-5.6 Terra?
GLM 5.2: open weights (zai-org/GLM-5.2). GPT-5.6 Terra: closed weights, API only.