LangChain vs Together AI
The framework for building LLM apps — chains, agents, RAG, LangGraph
vs. Open-source LLM infra — inference + fine-tuning + dedicated GPUs + image/video/audio
Pricing tiers
LangChain
OSS (MIT)
MIT-licensed core library. Free forever. Python + JS.
$0 base (usage-based)
LangSmith (see entry)
Observability layer — Developer free, Plus $39/seat. Separate platform.
$0 base (usage-based)
LangGraph Platform — Developer
Deploy LangGraph agents as an API. Free tier — limited execution minutes.
$0 base (usage-based)
LangGraph Platform — Plus
$39/seat/mo (tied to LangSmith Plus). More execution credit. Production features.
$39/mo
Enterprise
Custom. Self-host, dedicated support, SSO.
Custom
Together AI
Pay-as-you-go
Per-token pricing for serverless inference. No minimum.
$0 base (usage-based)
Dedicated Endpoints
Single-tenant GPU endpoints billed hourly.
$0 base (usage-based)
Batch API (50% off)
50% discount for async batch processing on most serverless models.
$0 base (usage-based)
Reserved GPU Clusters
6+ day commitments with discounted reserved rates.
$0 base (usage-based)
Enterprise
Custom. Private deployments, VPC, SLAs, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing oss on LangChain vs payg on Together AI.
| Metric | LangChain | Together AI |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
LangChain · 18 features
- Agents — Tool-using agents with reasoning loops.
- Chains (LCEL) — LangChain Expression Language — pipe primitives into chains.
- Checkpointers (LangGraph) — Persist agent state to SQL, Mongo, Redis, Postgres.
- Document Loaders — 150+ loaders for PDF, HTML, Notion, Google Drive, S3, GitHub, etc.
- Human-in-the-loop — Pause agent for approval, then resume.
- LangGraph — Stateful graph-based agent runtime. Durable, replayable, human-in-the-loop.
- LangGraph Platform — Managed hosting for LangGraph agents with state persistence.
- LangGraph Studio — Desktop IDE for debugging agent graphs.
- LangServe — Deploy chains as FastAPI endpoints.
- Memory — Buffer, summary, entity, vector memory stores.
- Output Parsers — Structured JSON, Pydantic schemas, function calling.
- Prompt Templates — Templating + partial filling + output parsers.
- RAG (Retrieval-Augmented Generation) — Standard patterns + 50+ retrievers.
- Streaming — First-class streaming at every layer.
- Subgraphs — Compose agent graphs hierarchically.
- Text Splitters — Recursive, token, semantic splitters for chunking.
- Tools — 400+ pre-built tools (web search, code, databases, APIs).
- Vector Store Integrations — 60+ vector DBs (Pinecone, Chroma, Weaviate, PGVector, Qdrant, Milvus).
Together AI · 14 features
- Audio (ASR + TTS) — Whisper Large v3 + Cartesia Sonic-3.
- Batch API — 50% discount for async processing.
- Code Interpreter — LLM with integrated code execution.
- Code Sandbox — Secure Python execution environment.
- Dedicated Endpoints — Single-tenant GPU endpoints for consistent latency.
- Embeddings — BGE + nomic + mxbai embedding models.
- Fine-Tuning — LoRA + full fine-tune + DPO on Llama, Qwen, Mistral.
- Image Generation — FLUX.2, SD3, Ideogram, etc.
- OpenAI-Compat API — Drop-in OpenAI SDK replacement.
- Private Deploy — Dedicated tenant + VPC.
- Reranker — Rerank model for RAG retrieval refinement.
- Reserved Clusters — Discounted GPU clusters for committed use.
- Serverless Inference — 200+ open models. OpenAI-compatible API.
- Video Generation — Veo 3.0, Kling 2.1, Vidu 2.0.
Developer interfaces
| Kind | LangChain | Together AI |
|---|---|---|
| CLI | — | Together CLI |
| SDK | @langchain/core (Node), langchain (Python), langgraph (JS), langgraph (Python), LangServe | together-js, together-python |
| REST | LangGraph Platform | Code Sandbox / Interpreter, Dedicated Endpoints, Together REST API (OpenAI-compat) |
Staxly is an independent catalog of developer platforms. Outbound links to LangChain and Together AI are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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