
SpecialistBattle-test AI coding models side by side
SpecialistBattle-test AI coding models side by side
Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. ModelFusion records 119 monthly visits with -88.2% growth and Freemium pricing.

Free LLM toolkit: cost calculators, prompts and model comparison
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | coddy.tech | modelfusion.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 7.48M (7,478,457) | 119 (119) |
| MoM Traffic Delta | +1.13M (+17.8%) | -885 (-88.2%) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🌐 Global (—) |
| Direct Visits / mo | 3.13M | 51 |
| User Rating | 4.3 | 4.2 |
| Supported Platforms | Website | Website |
Learn to code free with hands-on lessons and instant playgrounds
Short, practice-first coding lessons that run directly in your browser, so you can start learning without installing a compiler or development environment.
Dedicated playgrounds for Python, JavaScript, C, C++, Java, SQL, React, Go, Swift and many other languages let you test snippets and experiment immediately after each lesson.
Structured curricula such as Software Engineer, Frontend, Full Stack, Backend, Data Analyst, Data Scientist, DevOps and game development bundle the skills employers actually ask for.
Streak-style daily coding challenges and progress tracking help learners build a consistent habit and stay motivated between longer courses.

Free LLM toolkit: cost calculators, prompts and model comparison
Estimate API costs for GPT-4, Claude, Gemini and 25+ models and compare pricing across providers before you spend.
Access a large library of ready-made prompts and count tokens for any model to reduce cost and improve efficiency.
Find the best model for a use case and compare MMLU, HumanEval and other performance metrics interactively.
Chat with several AI models at once for side-by-side comparison, and upload PDFs or Word files to query them with AI.

SpecialistBattle-test AI coding models side by side
SpecialistBattle-test AI coding models side by side

Delivers structured data science and coding courses with interactive playgrounds, but focuses heavily on data analytics rather than general software engineering.

SpecialistTeaches computer science and logic through visual interactive puzzles and an AI tutor, but lacks traditional text-editor coding playgrounds.
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.

SpecialistExpert human data and evaluation for training frontier AI

Free / Open-sourceOpen-source database of AI models, prices and capabilities
Free / Open-sourceOpen-source database of AI models, prices and capabilities

SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistYour personal AI tutor — generate a course on anything in seconds
SpecialistYour personal AI tutor — generate a course on anything in seconds

SpecialistA free prompt library and AI workflow hub for professionals
SpecialistA free prompt library and AI workflow hub for professionals
Free / Open-sourceOpen-source engineering calculators for civil and structural design
Free / Open-sourceOpen-source engineering calculators for civil and structural design
SpecialistConverts syllabi into interactive computer science labs and exams, but lacks Coddy's casual bite-sized curriculum.
SpecialistConverts syllabi into interactive computer science labs and exams, but lacks Coddy's casual bite-sized curriculum.
SpecialistA free community and toolbox for prompt engineers and AI builders
SpecialistA free community and toolbox for prompt engineers and AI builders