Softwr

Software · head to head

LangSmith vs Together AI

L

LangSmith

Software

Know what your agents are really doing

From
On request
Rated
-
Full reviewWebsite
Together AI logo

Together AI

Software

Open-source AI at scale

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Together AI has a free tier, so it costs nothing to try first.
  • Each has a real cost: LangSmith usage beyond the included trace allotment is billed in LangChain Compute Units at $1.50 per LCU and Storage Units at $1.00 per LSU, an unfamiliar metering unit compared to flat per-seat pricing, as of August 2026.; Together AI fine tuning carries a minimum charge of $4.00 per job regardless of dataset size

Where they differ

Only the attributes on which LangSmith and Together AI actually diverge.

Attributes where LangSmith and Together AI differ
AttributeLangSmithTogether AI
Starting priceOn requestFree
Pricing modelsubscriptionusage-based
Free tierNoYes
PlatformsWebApi, Cloud
FoundedUnknown2022

Identical on both: user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in LangSmith

Nothing recorded that Together AI does not also cover.

Only in Together AI

  • Open-source models
  • Fine-tuning
  • Fast inference
  • Embeddings
  • REST API
  • Python SDK
  • OpenAI compatible
  • Api support

What people use each for

The jobs each tool is most often brought in to do.

LangSmith

No use cases recorded yet. See the LangSmith review.

Together AI

  • Serverless inference against open source chat, vision, embedding, image and video modelsnot LangSmith
  • Renting dedicated single tenant H100, H200 or B200 GPU clusters by the hournot LangSmith
  • Fine tuning open weight models on a per token basisnot LangSmith

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

LangSmith

  • Usage beyond the included trace allotment is billed in LangChain Compute Units at $1.50 per LCU and Storage Units at $1.00 per LSU, an unfamiliar metering unit compared to flat per-seat pricing, as of August 2026.

Together AI

  • Fine tuning carries a minimum charge of $4.00 per job regardless of dataset size
  • Reserved GPU commitments beyond 180 days are priced by contacting sales with no published rate
  • Volume and enterprise discounts are quote only with no published threshold
  • Reserved dedicated inference pricing is contact sales while only on demand rates of $5.49 to $8.99 per GPU hour are published

Pricing, plan by plan

LangSmith

On request

No published plan breakdown. See the LangSmith review.

Together AI

Free
  • FreeFree
    • $5 credits
    • API access
  • Pay-per-use$0.2/per-million-tokens
    • All models
    • Fine-tuning

Which should you pick?

Choose LangSmith if

Nothing in the data separates LangSmith from Together AI on the points above - pick on price and on how each one feels to use.

LangSmith review

Choose Together AI if

  • You need open-source models.
  • You want to start without paying.
  • You work on Api, Cloud.
  • You also want fine-tuning.
Together AI review

Questions people ask

Is LangSmith or Together AI better?
Neither clearly leads. LangSmith starts at On request and Together AI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, LangSmith or Together AI?
Together AI has a free tier; the other does not. Paid plans start at On request for LangSmith and Free for Together AI.
Does LangSmith or Together AI run on more platforms?
LangSmith runs on Web. Together AI runs on Api, Cloud.
Can I use Together AI for free?
Yes. Together AI has a free tier, so you can try it without paying. LangSmith starts at On request.
What can LangSmith do that Together AI cannot?
Together AI covers Open-source models, Fine-tuning, Fast inference, Embeddings.
Share

Related pages

More on LangSmith

More on Together AI

Keep looking

Other head to heads