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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

LangChain logo
LangChain
✓ verifiedFreemium

LangSmith platform to trace, evaluate and deploy AI agents; framework-agnostic tooling for AI engineering teams.

DeepSeek logo
DeepSeek
✓ verifiedFreemium

Chinese AI lab DeepSeek offering free chat apps and low-cost API access to its frontier V-series and R-series reasoning models.

430M visits/mo
Code Arena logo
Code Arena
✓ verifiedFree

Side-by-side arena to compare AI coding models and build multi-file apps, with a public leaderboard and battle mode.

35M visits/mo201 saves
Unsloth AI logo
Unsloth AI
✓ verifiedFreemium

Open-source library and desktop app for fast, memory-efficient local fine-tuning and inference of open LLMs.

1.1M visits/mo29K saves
Nebius logo
Nebius
✓ verifiedPaid

AI-focused cloud offering NVIDIA GPU compute, storage and MLOps tooling for training and inference at scale, with usage-based pricing.

678K visits/mo133K saves
Pricing
Developer: $0/seat/mo (pay as you go)
Plus: $39/seat/mo (pay as you go)

No public pricing

No public pricing

No public pricing

NVIDIA H100: $3.85/GPU-hour on-demand ($2.15 preemptible)
NVIDIA H200: $4.50/GPU-hour on-demand
NVIDIA B200: $7.15/GPU-hour on-demand
Shared filesystem storage: $0.08/GiB per month
Core features
  • Agent observability and tracing
  • Evaluation and scoring
  • Agent deployment and scaling
  • Framework-agnostic SDKs
  • Open-source frameworks (langgraph, langchain)
  • Free DeepSeek chat (web and app)
  • Open API platform
  • V-series and R-series reasoning models
  • DeepSeek-V4 with long context and stronger agent ability
  • OpenAI/Anthropic-compatible API
  • Extensive published model lineup
  • Head-to-head model comparison
  • Battle mode matchups
  • Public model leaderboard
  • Multi-file app generation
  • File uploads as input
  • Optimized LoRA/FFT/PT training kernels for 500+ models
  • Local offline model runner for Mac and Windows
  • No-code dataset creation from PDFs, CSVs, and JSON
  • Unlimited tool-calling and web search inside model runs
  • Data Recipes workflow to turn documents into training datasets
  • Export to safetensors or GGUF for llama.cpp, vLLM, Ollama
  • Multi-GPU support on paid tiers
  • NVIDIA GPU instances (H100, H200, B200, GB200)
  • On-demand and preemptible GPU pricing
  • High-performance and object storage
  • Managed Kubernetes and Slurm (Soperator)
  • Serverless and managed inference (Token Factory)
  • MLOps tooling and 24/7 expert support
  • Commitment discounts up to 35%
Use cases
  • Debug and monitor LLM agents in production
  • Evaluate and improve agent quality
  • Deploy and scale agents
  • Free AI chat and assistance
  • Building apps via API
  • Reasoning and coding tasks
  • Low-cost LLM inference
  • Choosing the best coding model
  • Benchmarking AI code quality
  • Prototyping small apps
  • ML engineers fine-tuning open models on a single GPU for free
  • Teams building custom datasets from unstructured documents
  • Developers wanting to run and compare LLMs fully offline
  • Enterprises needing faster, more accurate multi-node training
  • Train large AI/ML models on GPU clusters
  • Run scalable inference workloads
  • Store and manage large training datasets
  • Run Slurm/Kubernetes AI pipelines
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