Cheaper overall
GLM 5
72% lower blended rate
Higher benchmark scores
GPT-5.4
leads on 13 of 22 figures
Bigger context window
GPT-5.4
1,050,000 vs 204,800 tokens
Cheaper cached input
GLM 5
$0.20 vs $0.25, 20% less
Where each one wins
GPT-5.4
- Larger context window 1,050,000 tokens
- Higher overall intelligence (Intelligence Index) 39 vs 27.9
- Higher graduate-level science (GPQA Diamond) 92 vs 82
- Higher expert-exam performance (Humanity's Last Exam) 43.7 vs 29.3
- Ahead on 10 more benchmark figures
- Offers Batch, Flex and Priority pricing not listed for GLM 5
GLM 5
- Cheaper input tokens $1.00 vs $2.50, 60% less
- Cheaper output tokens $3.20 vs $15.00, 79% less
- Cheaper cached input $0.20 vs $0.25, 20% less
- Cheaper on all four workloads
- Higher support-agent performance (ฯยฒ-Bench Telecom) 98.2 vs 87.1
- Higher answer reliability (Omniscience Non-Hallucination) 64.7 vs 17.4
- Higher Androidnative Elo 1,161 vs 1,046
- Ahead on 6 more benchmark figures
What four workloads cost
One run, and the same run a thousand times.
GLM 5 is cheaper on all four workloads, by much the same margin each time โ about 3 times, from $0.0026 against $0.0100 on a chat turn to $0.2048 against $0.4600 on a long document.
| Workload | GPT-5.4 | GLM 5 | ร1,000 | Difference |
|---|---|---|---|---|
| Chat turn 1,000 in / 500 out | $0.0100 | $0.0026 | $10.00 / $2.60 | GLM 5 is 74% cheaper |
| RAG answer 10,000 in / 800 out | $0.0370 | $0.0126 | $37.00 / $12.56 | GLM 5 is 66% cheaper |
| Agent loop 32,000 in / 700 out ร 20 calls | $0.4600 | $0.2048 | $460.00 / $204.80 | GLM 5 is 55% cheaper |
| Long document 400,000 in / 3,000 out | GLM 5's context window holds 204,800 tokens, so a 400,000-token prompt does not fit. | |||
Price per 1M tokens
Above 272,000 input tokens the rates change, and the new rate applies to the whole request, not just the tokens past that point: GPT-5.4's input goes from $2.50 to $5.00. It does not change which of the two is cheaper.
| Context band | Price | GPT-5.4 | GLM 5 | Difference |
|---|---|---|---|---|
| Prompts up to 272,000 tokens | Input | $2.50 | $1.00 | GLM 5 is 60% cheaper |
| Prompts up to 272,000 tokens | Cached input | $0.25 | $0.20 | GLM 5 is 20% cheaper |
| Prompts up to 272,000 tokens | Output | $15.00 | $3.20 | GLM 5 is 79% cheaper |
| Prompts over 272,000 tokens | Input | $5.00 | $1.00 | GLM 5 is 80% cheaper |
| Prompts over 272,000 tokens | Cached input | $0.50 | $0.20 | GLM 5 is 60% cheaper |
| Prompts over 272,000 tokens | Output | $22.50 | $3.20 | GLM 5 is 86% cheaper |
Blended: GPT-5.4 $5.625, GLM 5 $1.55 per 1M โ one rate at 3:1 input to output, for comparing two models at a glance.
GPT-5.4 priced by OpenAI, GLM 5 by Z.ai. Standard tier, pay-as-you-go.
Other pricing tiers
Only GPT-5.4 lists Batch, Flex and Priority, at up to 50% off its own standard rate; GLM 5 offers none of them.
Every tier either model sells is here, so this is the whole price sheet. A saving is measured against that model's own standard rate โ how we read tiers.
| Tier | GPT-5.4 | GLM 5 | Cheaper |
|---|---|---|---|
| Batch only on GPT-5.4 | $1.25 in / $7.50 out 50% off Standard | Not offered | — |
| Flex only on GPT-5.4 | $1.25 in / $7.50 out 50% off Standard | Not offered | — |
| Priority only on GPT-5.4 | $5.00 in / $30.00 out | Not offered | — |
Benchmarks
They share 22 figures: GPT-5.4 leads on 13, GLM 5 on 9. The widest gap is 127 points, on 3d Elo.
Overall intelligence
Intelligence Index โ Overall intelligence across reasoning, knowledge & math evals
GPT-5.4 ahead by 11.1
Graduate-level science
GPQA Diamond โ Graduate-level questions in biology, chemistry & physics
GPT-5.4 ahead by 10
Expert-exam performance
Humanity's Last Exam โ Expert-level questions across many academic domains
GPT-5.4 ahead by 14.4
Instruction following
IFBench โ Precise following of detailed instructions
GPT-5.4 ahead by 1.6
Support-agent performance
ฯยฒ-Bench Telecom โ Tool-using agent tasks in a telecom support setting
GLM 5 ahead by 11.1
Long-context reasoning
AA-LCR โ Long-context reasoning across large inputs
GPT-5.4 ahead by 6.3
Command-line work
Terminal-Bench Hard โ Complex command-line and terminal workflows
GPT-5.4 ahead by 14.4
Physics research reasoning
CritPt โ Unpublished physics research reasoning problems
GPT-5.4 ahead by 21.4
Factual accuracy
Omniscience Accuracy โ Breadth of factual knowledge across domains
GPT-5.4 ahead by 24.5
Answer reliability
Omniscience Non-Hallucination โ How reliably the model avoids fabricated answers
GLM 5 ahead by 47.3
Androidnative Elo
Design Arena head-to-head rating in the androidnative category
GLM 5 ahead by 115
Fullstack Elo
Design Arena head-to-head rating in the fullstack category
GLM 5 ahead by 106
Godotgamedev Elo
Design Arena head-to-head rating in the godotgamedev category
GLM 5 ahead by 9
Mobileapps Elo
Design Arena head-to-head rating in the mobileapps category
GLM 5 ahead by 49
3d Elo
Design Arena head-to-head rating in the 3d category
GLM 5 ahead by 127
Asciiart Elo
Design Arena head-to-head rating in the asciiart category
GPT-5.4 ahead by 52
Codecategories Elo
Design Arena head-to-head rating in the codecategories category
GLM 5 ahead by 34
Dataviz Elo
Design Arena head-to-head rating in the dataviz category
GPT-5.4 ahead by 6
Gamedev Elo
Design Arena head-to-head rating in the gamedev category
GPT-5.4 ahead by 4
Svg Elo
Design Arena head-to-head rating in the svg category
GPT-5.4 ahead by 27
Uicomponent Elo
Design Arena head-to-head rating in the uicomponent category
GPT-5.4 ahead by 10
Website Elo
Design Arena head-to-head rating in the website category
GLM 5 ahead by 28
Each figure is that model's best published run, with the effort level named beside it โ where these scores come from.
Specifications
GPT-5.4 holds 845,200 more input tokens in one request. GPT-5.4 also takes file and image.
| Specification | GPT-5.4 | GLM 5 |
|---|---|---|
| Context window | 1,050,000 tokens | 204,800 tokens |
| Max output | 128,000 tokens | 128,000 tokens |
| Takes in | Text, image, file | Text |
| Puts out | Text | Text |
| Knowledge cutoff | 31 Aug 2025 | โ |
| Released | 5 Mar 2026 | 11 Feb 2026 |
| Status | Active | Active |
| Sold by | OpenAI | Z.ai |
FAQs
- Is GPT-5.4 cheaper than GLM 5?
- No โ the other way round. A 1,000-token prompt with a 500-token reply costs $0.0100 on GPT-5.4 and $0.0026 on GLM 5, and the same model is cheaper on every workload on this page.
- How much do GPT-5.4 and GLM 5 cost per 1M tokens?
- GPT-5.4 costs $2.50 for input and $15.00 for output. GLM 5 costs $1.00 and $3.20. Standard pay-as-you-go rates, as of 11 Feb 2026.
- Which is better, GPT-5.4 or GLM 5?
- On published benchmarks, GPT-5.4. It leads on 13 of the 22 figures both models report, including overall intelligence (Intelligence Index), where it scores 39 against 27.9.
- Does GPT-5.4 or GLM 5 offer batch pricing?
- GPT-5.4 only. Its batch input costs $1.25, 50% off its standard rate, and GLM 5 lists no batch tier at all.
- Does GPT-5.4 or GLM 5 have a bigger context window?
- GPT-5.4, at 1,050,000 tokens against 204,800. That is 845,200 more input tokens in a single request.