OpenAI API vs ChatGPT vs Z.ai

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
OpenAI API
vs
Competitor 1
ChatGPT
Competitor 2
Z.ai
Competitor 3
Suggested competitors for OpenAI API: Anthropic Claude API90% OpenRouter86% Mistral AI85% DeepSeek80% Cohere80% Azure AI Foundry80% Amazon Bedrock80% Together AI78%
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3 tools · best value per row highlighted
Your tool OpenAI API
platform.openai.com
The API powering the AI ecosystem
Remove
Competitor ChatGPT
chatgpt.com
Your AI assistant for everything
Make main Remove
Competitor Z.ai
chat.z.ai
Z
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
15.2Mvisits/mo
5.6Bvisits/mo
10Mvisits/mo
MoM change
▲ 4.6%
▲ 3.5%
▼ 12.3%
6-month growth
-2.4%
-1.6%
+44.6%
Global rank web
—
#7
—
Avg. last 3 months
15.2M
5.5B
10.6M
Bounce rate lower is better
34%
30%
25%
Pages / visit
5.4
4.3
3.2
Visit duration
3m 56s
6m 35s
19m 00s
Traffic sources
● Direct 82% · ● Referral 15%
● Direct 95% · ● Referral 3%
● Direct 91% · ● Referral 8%
OpenAI APIChatGPTZ.ai
01.5B2.9B4.4B5.8BOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2MChatGPT · 5.8BChatGPT · 5.5BChatGPT · 5.7BChatGPT · 5.4BChatGPT · 5.7BChatGPT · 5.5BChatGPT · 5.6BChatGPT · 5.4BChatGPT · 5.5BChatGPT · 5.6BZ.ai · 4.2MZ.ai · 4.4MZ.ai · 5.4MZ.ai · 6.2MZ.ai · 6.9MZ.ai · 8.6MZ.ai · 8.5MZ.ai · 10.4MZ.ai · 11.4MZ.ai · 10M1M10M100M1B10BOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2MChatGPT · 5.8BChatGPT · 5.5BChatGPT · 5.7BChatGPT · 5.4BChatGPT · 5.7BChatGPT · 5.5BChatGPT · 5.6BChatGPT · 5.4BChatGPT · 5.5BChatGPT · 5.6BZ.ai · 4.2MZ.ai · 4.4MZ.ai · 5.4MZ.ai · 6.2MZ.ai · 6.9MZ.ai · 8.6MZ.ai · 8.5MZ.ai · 10.4MZ.ai · 11.4MZ.ai · 10MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Free
Starting price
—
$8per month · free tier available
Free
Free tier
–
Free trial
–
–
API access
–
–
–
Plans
—
Free FreeGo $8/moPlus $20/moPro 5x $100/mo+1 more
—
Capabilities input → output
Input
AudioDocumentsImagesText
TextImagesDocumentsCodeAudio
TextImagesDocumentsCode
Output
VideoTextAudioCodeImages
TextImagesCodeAudio
TextCodeApps
Skill level
Advanced
Beginner-friendly
Intermediate
Categories
Development & CodeAI APILarge Language Models (LLMs)
Chatbots & CompanionsDevelopment & CodeEducation & LearningImage Editing+27 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+6 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
6
19
4
Chatbots
–
Large language models
–
Coding
–
APIs
–
–
Agents
–
–
Blogging
–
–
Copywriting
–
–
Developer tools
–
–
Email writing
–
–
Essay writing
–
–
Grammar checking
–
–
Image generation
–
–
Image to text
–
–
LLM development
–
–
Research
–
–
Search engine
–
–
Summarizing
–
–
Translations
–
–
Writing
–
–
API integrations
–
–
Chatbot building
–
–
Code documentation
–
–
Debugging
–
–
Image editing
–
–
Image to image
–
–
Refactoring
–
–
Community on aitoolstime
Rating
no ratings yet
★ 4.34 ratings
no ratings yet
Upvotes
▲ 1
▲ 17
▲ 1
Saves
0
4
0
Reviews
0
4
0
Prompts
0
17
0
Verified listing
–
–
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.