GPT-5.1 vs GLM-5.3-Flash
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
GPT-5.1
B
GLM-5.3-Flash
- ProviderOpenAIZ.ai
- Rank#60#58Higher rank
- TierAA
- Score74.474.8Higher score
- Price$1.25 / $10 per 1M tokens (input/output)Open weights (MIT); API $0.15 input / $0.50 output per 1M tokens via Z.aiLower price tier
- TaglineOpenAI's warmer, adaptive-reasoning update to GPT-5 with a 400K-token context window for everyday and agentic use.Z.ai's lighter open-weight GLM-5.3 variant with a 1M-token context window.
| Attribute | GPT-5.1 | GLM-5.3-Flash |
|---|---|---|
| Provider | OpenAI | Z.ai |
| Rank | #60 | #58Higher rank |
| Tier | A | A |
| Score | 74.4 | 74.8Higher score |
| Price | $1.25 / $10 per 1M tokens (input/output) | Open weights (MIT); API $0.15 input / $0.50 output per 1M tokens via Z.aiLower price tier |
| Tagline | OpenAI's warmer, adaptive-reasoning update to GPT-5 with a 400K-token context window for everyday and agentic use. | Z.ai's lighter open-weight GLM-5.3 variant with a 1M-token context window. |