LogoLMSpeed
  • Home
  • Free
  • Models
  • Providers
  • Docs
LogoLMSpeed
LogoLMSpeed

The best API speed test tool

GitHubGitHubTwitterX (Twitter)Email
Product
  • Features
  • Pricing
  • FAQ
Leaderboard
  • Overview
  • Speed Ranking
  • Latency Ranking
  • Health Ranking
  • Model Pricing
  • Model Speed
  • Reasoning
  • Coding
Models
  • All Models
  • GPT
  • Claude
  • Gemini
  • DeepSeek
  • Llama
  • Qwen
Free Models
  • All Free Models
  • Free GPT
  • Free Claude
  • Free Gemini
  • Free DeepSeek
  • Free Llama
  • Free Qwen
Resources
  • Speed Test
  • Provider Directory
  • Documentation
Legal
  • Cookie Policy
  • Privacy Policy
  • Terms of Service
© 2026 LMSpeed All Rights Reserved.Made by Nexmoe with ❤️
Back to models

Data points: 57

On this page

Key TakeawaysComparison sheetBenchmark score comparisonAPI audit comparisonProvider examplesWhen to choose each modelFAQRelated compare reports

Key Takeaways

The readout for GLM-4.1v Thinking Flash and GPT-5, before the detailed comparison sheet.

Decision read

GPT-5

GPT-5 currently has the stronger profile, with verified wins split 2 to 4.

Evidence depth

57 data points

Includes 0 benchmark rows, 0 audit samples, and 7 provider examples.

Selection signal

Start with GPT-5

The charts below split 7 high-signal samples across speed, scores, and audit health.

Model compare

GLM-4.1v Thinking Flash vs GPT-5

glm-4-1v-thinking-flash-vs-gpt-5

Model A

ChatGLM

GLM-4.1v Thinking Flash

Model B

OpenAI

GPT-5

Overall leaderContenderLeading
Verified metric wins2 wins4 wins
Where it leadsCheapest input price, Recent testsAverage speed, First-token latency, Free providers, Provider coverage
Model metadataNo OpenRouter metadata is available yet for this model.GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output.
DeveloperZhipu AIOpenAI
Context windowNo data128K tokens
Max outputNo data16.4K tokens
ReleasedNo dataAug 2025
ModalitiesNo data

Input

FileImageText

Output

Text
FeaturesNone listed
Text inputImage inputFile inputText outputStructured outputsJSON mode
ParametersNo dataNo data
TokenizerNo dataGPT
Knowledge cutoffNo data2024-09-30
OpenRouter IDNo dataopenai/gpt-5-chat
ReferencesNo dataNo data

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Metric
ChatGLMGLM-4.1v Thinking Flash
OpenAIGPT-5
No shared benchmark metrics are available yet.

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider
ChatGLMGLM-4.1v Thinking Flash
OpenAIGPT-5
No completed audits are available from shared providers yet.

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider
ChatGLMGLM-4.1v Thinking Flash
OpenAIGPT-5
6345ywz API0 tests
ChatGLM

GLM-4.1v Thinking Flash

zhipu/glm-4.1v-thinking-flash

speed / latency

N/A / N/A

input / output

$0.137/M / $0.137/M

OpenAI

GPT-5

gpt-5

speed / latency

N/A / N/A

input / output

$0.171/M / $1.37/M

DMXAPI0 tests
ChatGLM

GLM-4.1v Thinking Flash

speed / latency

N/A / N/A

input / output

No data

OpenAI

GPT-5

speed / latency

N/A / N/A

input / output

No data

IXIOCCAPI0 tests
ChatGLM

GLM-4.1v Thinking Flash

glm-4.1v-thinking-flash

speed / latency

N/A / N/A

input / output

$0.0002/M / $0.0002/M

OpenAI

GPT-5

openai/gpt-5-chat

speed / latency

N/A / N/A

input / output

$75.00/M / $75.00/M

KFCV500 tests
ChatGLM

GLM-4.1v Thinking Flash

speed / latency

N/A / N/A

input / output

No data

OpenAI

GPT-5

speed / latency

N/A / N/A

input / output

No data

Koyeb AI Gateway0 tests
ChatGLM

GLM-4.1v Thinking Flash

glm-4.1v-thinking-flash

speed / latency

N/A / N/A

input / output

$0.037/M / $0.037/M

OpenAI

GPT-5

gpt-5-chat

speed / latency

N/A / N/A

input / output

$0.037/M / $0.300/M

SWT-API
ChatGLM

GLM-4.1v Thinking Flash

glm-4.1v-thinking-flash

speed / latency

No data

input / output

$0.037/M / $0.037/M

OpenAI

GPT-5

gpt-5-chat

speed / latency

No data

input / output

$0.037/M / $0.300/M

钱多多 API
ChatGLM

GLM-4.1v Thinking Flash

glm-4.1v-thinking-flash

speed / latency

No data

input / output

$0.098/M / $0.098/M

OpenAI

GPT-5

gpt-5-search-api-2025-10-14

speed / latency

No data

input / output

$0.612/M / $4.90/M

When to choose each model

This report only uses LMSpeed data for GLM-4.1v Thinking Flash and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Guidance
ChatGLMGLM-4.1v Thinking Flash
OpenAIGPT-5
When to choose each model

GLM-4.1v Thinking Flash

GLM-4.1v Thinking Flash is stronger when you prioritize Cheapest input price, Recent tests.

GPT-5

GPT-5 is stronger when you prioritize Average speed, First-token latency, Free providers, Provider coverage.

FAQ

TL;DR: GPT-5 leads across 57 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.

Why is this comparison indexable?
It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?
No. Metrics without LMSpeed data are omitted from this report.

Related compare reports

Continue from GLM-4.1v Thinking Flash vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.

ChatGLMGLM-4.1v Thinking Flash vs GPT-5.46 verified data pointsClaudeClaude Opus 4.6 vs GLM-4.1v Thinking Flash6 verified data pointsChatGLMGLM-4.1v Thinking Flash vs GPT-5.26 verified data pointsGeminiGemini 2.5 Pro vs GLM-4.1v Thinking Flash6 verified data points

Data as of Jun 13, 2026, 07:11 PM·Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.