Compare · ModelsLive · 2 picked · head to head
GLM 5.1 vs GPT-4 (older v0314)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GLM 5.1 wins on 3/3 benchmarks
GLM 5.1 wins 3 of 3 shared benchmarks. Leads in arena · knowledge · math.
Category leads
arena·GLM 5.1knowledge·GLM 5.1math·GLM 5.1
Hype vs Reality
Attention vs performance
GLM 5.1
#84 by perf·#3 by attention
GPT-4 (older v0314)
#81 by perf·no signal
Best value
GLM 5.1
22.2x better value than GPT-4 (older v0314)
GLM 5.1
27.1 pts/$
$2.00/M
GPT-4 (older v0314)
1.2 pts/$
$45.00/M
Vendor risk
Who is behind the model
z-ai
private · undisclosed
OpenAI
$840.0B·Tier 1
Head to head
3 benchmarks · 2 models
GLM 5.1GPT-4 (older v0314)
Chatbot Arena Elo · Overall
GLM 5.1 leads by +178.8
GLM 5.1
1464.6
GPT-4 (older v0314)
1285.8
GPQA diamond
GLM 5.1 leads by +72.2
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GLM 5.1
86.5
GPT-4 (older v0314)
14.3
OTIS Mock AIME 2024-2025
GLM 5.1 leads by +92.9
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GLM 5.1
93.3
GPT-4 (older v0314)
0.5
Full benchmark table
| Benchmark | GLM 5.1 | GPT-4 (older v0314) |
|---|---|---|
Chatbot Arena Elo · Overall | 1464.6 | 1285.8 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 86.5 | 14.3 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 93.3 | 0.5 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.97 | $3.04 | 205K tokens (~102 books) | $14.83 | |
| $30.00 | $60.00 | 8K tokens (~4 books) | $375.00 |