OpenRouter vs MostlyAI vs Defapi vs FastRouter

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

Your tool
OpenRouter
vs
Competitor 1
MostlyAI
Competitor 2
DDefapi
Competitor 3
FastRouter
Compare
4 tools · best value per row highlighted
Your tool OpenRouter
openrouter.ai
Every model, one endpoint
Remove
Competitor MostlyAI
mostly.ai
Make main Remove
Competitor DDefapi
defapi.org
You know how managing multiple AI provider integrations usually means maintaining separate codebases for each vendor
Make main Remove
Competitor FastRouter
fastrouter.ai
This LLM gateway lets teams tap into over 100 AI models through one API endpoint
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
22Mvisits/mo
43.5Kvisits/mo
2.4Kvisits/mo
15.5Kvisits/mo
MoM change
▲ 14.6%
▼ 22.5%
▼ 42.6%
▼ 62.7%
6-month growth
+39.6%
-35.7%
-86.2%
+4.7%
Global rank web
#2,023
#791,007
#4,650,820
#1,733,591
Avg. last 3 months
19.5M
55.6K
4.8K
23.1K
Bounce rate lower is better
32%
39%
36%
45%
Pages / visit
7.7
1.8
1.4
1.5
Visit duration
6m 13s
22s
7s
15s
Traffic sources
● Direct 89% · ● Referral 10%
—
—
● Direct 95% · ● Referral 5%
OpenRouterMostlyAIDefapiFastRouter
05.5M11M16.5M22MOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MMostlyAI · 76.8KMostlyAI · 88.7KMostlyAI · 87.8KMostlyAI · 67.7KMostlyAI · 61.8KMostlyAI · 56.7KMostlyAI · 67.3KMostlyAI · 56.1KMostlyAI · 43.5KDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KFastRouter · 4.9KFastRouter · 14.8KFastRouter · 11KFastRouter · 10.2KFastRouter · 12.2KFastRouter · 41.6KFastRouter · 15.5K1K10K100K1M10M100MOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MMostlyAI · 76.8KMostlyAI · 88.7KMostlyAI · 87.8KMostlyAI · 67.7KMostlyAI · 61.8KMostlyAI · 56.7KMostlyAI · 67.3KMostlyAI · 56.1KMostlyAI · 43.5KDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KFastRouter · 4.9KFastRouter · 14.8KFastRouter · 11KFastRouter · 10.2KFastRouter · 12.2KFastRouter · 41.6KFastRouter · 15.5KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Paid
Freemium
Starting price
Free tier
Free
—
$199per month · free tier available
Free tier
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Free trial
–
–
–
–
API access
–
Plans
Free FreeStandard Custom/moBusiness Custom/moEnterprise Custom
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Gemini 3.1 Pro Preview $1/$6/per requestClaude Sonnet 4.6 $1.5/$7.5/per requestClaude Opus 4.6 $2.5/$12.5/per requestSora 2 Stable $0.175+/per request+2 more
Starter FreePro $199/moBusiness $799/moEnterprise Custom
Capabilities input → output
Input
AudioVideoTextImages
TextData
ImagesTextAudio
TextImagesAudio
Output
VideoTextImagesAudio
Data
TextImagesAudio
VideoTextImagesAudio
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI APILarge Language Models (LLMs)
Development & CodeResearch & AnalyticsAI Developer ToolsAI For Data Analytics
Development & CodeAI API
Development & CodeAI APIAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
5
6
4
6
APIs
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LLM gateway
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–
API integrations
–
–
API management
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–
Developer tools
–
–
Model routing
–
–
–
Synthetic data
–
–
–
Data analysis
–
–
–
Large language models
–
–
–
API security
–
–
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Data anonymization
–
–
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Data privacy compliance
–
–
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Data science
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Development
–
–
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LLM comparison
–
–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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.