💰 Unit Cost Winner GLM-5.3 $0.35/1M in · $1.00/1M out
⚡ Latency & Speed Winner GLM-5.3 160ms TTFT · 120 tok/s
💻 Coding (SWE) Winner GLM-5.3 56% SWE-bench · 91.5% HumanEval
🧠 STEM Reasoning Winner GLM-5.3 67% GPQA · 88% MATH-500

Which model is better: GLM-5.3 or GPT-4o?

GLM-5.3 is 86.0% cheaper for input tokens ($0.35 vs. $2.50 per 1M tokens) and $1.00 vs. $10.00 for output tokens (7.1x cost advantage). In terms of operational performance, GLM-5.3 delivers lower response latency at 160ms TTFT (120ms faster than GPT-4o) with 120 vs. 100 tok/s throughput. GLM-5.3 leads coding evaluations at 56.0% SWE-bench Verified vs. 48.0% for GPT-4o and 67.0% vs. 53.6% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.

Verified Performance & Unit Economics Delta (12 Dimensions)

Daily synchronized metrics across token pricing, prompt cache economics, latency, throughput, and 5 capability benchmarks.

Metric / Dimension GLM-5.3 GPT-4o Net Delta / Advantage
Input Cost / 1M Tokens $0.35 $2.50 GLM-5.3 is 7.1x cheaper
Output Cost / 1M Tokens $1.00 $10.00 GLM-5.3 (90.0% lower)
Prompt Cache Read / 1M $0.090 $1.250 GLM-5.3 is 13.9x cheaper
Prompt Cache Write / 1M $0.35 $2.50 GLM-5.3 is 7.1x cheaper
Context Window (Max Output) 131k (16k out) 131k (16k out) Equal Context Window
Avg TTFT Response Latency 160ms 280ms GLM-5.3 (120ms faster)
Generation Speed (Throughput) 120 tok/s 100 tok/s GLM-5.3 (+20 tok/s faster)
SWE-bench Verified (Coding) 56% 48% GLM-5.3 (+8.0% lead)
GPQA Diamond (PhD STEM) 67% 53.6% GLM-5.3 (+13.4% lead)
MMLU-Pro (Multi-Discipline) 80.5% 75.9% GLM-5.3 (+4.6% lead)
MATH-500 (Quantitative Logic) 88% 76.6% GLM-5.3 (+11.4% lead)
Inference Value Score (IVR) 69.9 / 100 47.6 / 100 GLM-5.3 (+22.3 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.

25.0M Tokens
500K 50M 250M 500M+
5.0M Tokens
100K 25M 75M 150M+
50% Cached
0% (Uncached) 25% 50% (Typical Agent) 95% Max

Estimated Monthly Spend

GLM-5.3 $10.50

$0.35/1M in · $1.00/1M out

Prompt Cache: $0.090/1M read · $0.35/1M write

GPT-4o $96.88

$2.50/1M in · $10.00/1M out

Prompt Cache: $1.250/1M read · $2.50/1M write

Projected Monthly Cost Reduction
$86.38 / mo
(89.2% lower cost with GLM-5.3)
Open Full Matchup Analysis →
A

When to Choose GLM-5.3

Choose GLM-5.3 (Zhipu AI) for bilingual flagship foundation model optimized for cross-lingual reasoning, long-form structured analysis, and enterprise tool execution — offering a 131k context window, 160ms TTFT, and $0.35/1M input pricing ($0.090/1M cached reads).

B

When to Choose GPT-4o

Choose GPT-4o (OpenAI) for general enterprise assistants, multimodal customer support, and structured JSON output pipelines — offering a 131k context window, 280ms TTFT, and $2.50/1M input pricing ($1.250/1M cached reads).

Related Questions & Decision Factors

Which is cheaper: GLM-5.3 or GPT-4o?

GLM-5.3 is cheaper at $0.35/1M input tokens ($1.00/1M output) compared to $2.50/1M input ($10.00/1M output) for GPT-4o.

Which model has lower TTFT latency and higher tok/s throughput: GLM-5.3 or GPT-4o?

GLM-5.3 delivers faster first-token latency at 160ms TTFT (120 tok/s throughput) compared to 280ms TTFT (100 tok/s) for GPT-4o.

How do GLM-5.3 and GPT-4o compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, GLM-5.3 scores 56% versus 48% for GPT-4o. On GPQA Diamond graduate-level STEM reasoning, GLM-5.3 scores 67% versus 53.6% for GPT-4o (and 88% vs 76.6% on MATH-500).

When should you choose GLM-5.3?

Choose GLM-5.3 (Zhipu AI) for bilingual flagship foundation model optimized for cross-lingual reasoning, long-form structured analysis, and enterprise tool execution — offering a 131k context window, 160ms TTFT, and $0.35/1M input pricing ($0.090/1M cached reads).

When should you choose GPT-4o?

Choose GPT-4o (OpenAI) for general enterprise assistants, multimodal customer support, and structured JSON output pipelines — offering a 131k context window, 280ms TTFT, and $2.50/1M input pricing ($1.250/1M cached reads).

Explore High-Priority Related Model Matchups