Together AI vs LangSmith

Together AI

LangSmith

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.

LangSmith · 14 features

• Alerts — Threshold alerts on latency, cost, eval metrics.
• Annotation Queues — Human-review workflows for trace quality rating.
• Custom Dashboards — Aggregate metrics dashboards per project/tag.
• Datasets — Collect examples → use as eval sets or training data.
• Evaluations — LLM-as-judge, embedding similarity, custom Python evaluators, offline batch eval…
• LangChain Integration — Auto-trace any LangChain/LangGraph run with env var.
• LangGraph Integration — First-class trace + eval for LangGraph agents.
• LLM Tracing — Automatic trace every LLM call + tool call + chain step.
• OpenTelemetry Export — Export traces as OTLP to Datadog/Honeycomb/etc.
• Playground — Test prompts + models inline before deploying.
• Prompt Canvas — Visual prompt editor with live test + eval.
• Prompt Hub — Public + private prompt library with versioning.
• Self-Hosted (Enterprise) — Docker + k8s deployment in your infra.
• Threads + Sessions — Group traces into conversational sessions.