💰 Unit Cost Winner GLM-5.3-Flash $0.12/1M in · $0.40/1M out
⚡ Latency & Speed Winner GLM-5.3-Flash 90ms TTFT · 175 tok/s
💻 Coding (SWE) Winner GPT-6.1 Sol 86.4% SWE-bench · 96.8% HumanEval
🧠 STEM Reasoning Winner GPT-6.1 Sol 92.4% GPQA · 98.8% MATH-500

Which model is better: GLM-5.3-Flash or GPT-6.1 Sol?

GLM-5.3-Flash is 94.0% cheaper for input tokens ($0.12 vs. $2.00 per 1M tokens) and $0.40 vs. $10.00 for output tokens (16.7x cost advantage). In terms of operational performance, GLM-5.3-Flash delivers lower response latency at 90ms TTFT (430ms faster than GPT-6.1 Sol) with 175 vs. 135 tok/s throughput. GPT-6.1 Sol leads coding evaluations at 86.4% SWE-bench Verified vs. 52.8% for GLM-5.3-Flash and 92.4% vs. 63.5% 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-Flash GPT-6.1 Sol Net Delta / Advantage
Input Cost / 1M Tokens $0.12 $2.00 GLM-5.3-Flash is 16.7x cheaper
Output Cost / 1M Tokens $0.40 $10.00 GLM-5.3-Flash (96.0% lower)
Prompt Cache Read / 1M $0.030 $0.100 GLM-5.3-Flash is 3.3x cheaper
Prompt Cache Write / 1M $0.12 $2.00 GLM-5.3-Flash is 16.7x cheaper
Context Window (Max Output) 262k (16k out) 1,075k (128k out) GPT-6.1 Sol (4.1x larger context)
Avg TTFT Response Latency 90ms 520ms GLM-5.3-Flash (430ms faster)
Generation Speed (Throughput) 175 tok/s 135 tok/s GLM-5.3-Flash (+40 tok/s faster)
SWE-bench Verified (Coding) 52.8% 86.4% GPT-6.1 Sol (+33.6% lead)
GPQA Diamond (PhD STEM) 63.5% 92.4% GPT-6.1 Sol (+28.9% lead)
MMLU-Pro (Multi-Discipline) 78.4% 91% GPT-6.1 Sol (+12.6% lead)
MATH-500 (Quantitative Logic) 84% 98.8% GPT-6.1 Sol (+14.8% lead)
Inference Value Score (IVR) 76.7 / 100 62.9 / 100 GLM-5.3-Flash (+13.8 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-Flash $3.88

$0.12/1M in · $0.40/1M out

Prompt Cache: $0.030/1M read · $0.12/1M write

GPT-6.1 Sol $76.25

$2.00/1M in · $10.00/1M out

Prompt Cache: $0.100/1M read · $2.00/1M write

Projected Monthly Cost Reduction
$72.38 / mo
(94.9% lower cost with GLM-5.3-Flash)
Open Full Matchup Analysis →
A

When to Choose GLM-5.3-Flash

Choose GLM-5.3-Flash (Zhipu AI) for sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows — offering a 262k context window, 90ms TTFT, and $0.12/1M input pricing ($0.030/1M cached reads).

B

When to Choose GPT-6.1 Sol

Choose GPT-6.1 Sol (OpenAI) for delivers near-GPT-6 Astra frontier accuracy at one-fifth the token cost with a 95% cache read discount for high-efficiency agentic coding, computer use, and enterprise workflow automation — offering a 1,075k context window, 520ms TTFT, and $2.00/1M input pricing ($0.100/1M cached reads).

Related Questions & Decision Factors

Which is cheaper: GLM-5.3-Flash or GPT-6.1 Sol?

GLM-5.3-Flash is cheaper at $0.12/1M input tokens ($0.40/1M output) compared to $2.00/1M input ($10.00/1M output) for GPT-6.1 Sol.

Which model has lower TTFT latency and higher tok/s throughput: GLM-5.3-Flash or GPT-6.1 Sol?

GLM-5.3-Flash delivers faster first-token latency at 90ms TTFT (175 tok/s throughput) compared to 520ms TTFT (135 tok/s) for GPT-6.1 Sol.

How do GLM-5.3-Flash and GPT-6.1 Sol compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, GLM-5.3-Flash scores 52.8% versus 86.4% for GPT-6.1 Sol. On GPQA Diamond graduate-level STEM reasoning, GLM-5.3-Flash scores 63.5% versus 92.4% for GPT-6.1 Sol (and 84% vs 98.8% on MATH-500).

When should you choose GLM-5.3-Flash?

Choose GLM-5.3-Flash (Zhipu AI) for sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows — offering a 262k context window, 90ms TTFT, and $0.12/1M input pricing ($0.030/1M cached reads).

When should you choose GPT-6.1 Sol?

Choose GPT-6.1 Sol (OpenAI) for delivers near-GPT-6 Astra frontier accuracy at one-fifth the token cost with a 95% cache read discount for high-efficiency agentic coding, computer use, and enterprise workflow automation — offering a 1,075k context window, 520ms TTFT, and $2.00/1M input pricing ($0.100/1M cached reads).

Explore High-Priority Related Model Matchups