Key facts
| API compatibility | OpenAI-compatible /v1/chat/completions (drop-in base URL change) |
| Models | 30+ models in one catalogue, from free tiers to frontier reasoning |
| Pricing | Flat monthly self-serve plans with unlimited fair-use usage |
| Free tier | plugsky-micro and plugsky-lite, no card required |
| Trial | 14-day full-access trial for stronger models |
| Fine-tuning | Fine-tuning endpoints are coming soon |
| Deployment | Plugsky cloud, your VPC, on-prem and air-gapped |
TL;DR
- Together AI competes on open-model serving and fine-tuning.
- For stock models, a flat-rate managed API is simpler to operate.
- OpenAI-compatible calls keep frameworks and agents portable.
- Fine-tuning is coming soon on Plugsky; keep Together for custom weights.
- Hybrid split: custom models on Together, general traffic on Plugsky.
How it works, step by step
- Separate stock-model traffic from fine-tuned and dedicated-capacity traffic.
- Benchmark Plugsky models on the stock workloads with recorded prompts.
- Move OpenAI-style call sites to the Plugsky base URL and map model names.
- Keep fine-tuned models on Together until Plugsky fine-tuning ships.
- Compare quality, throughput and cost shape across a full traffic cycle.
- Expand coverage workload by workload with documented rollback.
Original data
Try it yourself
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What Together AI provides
Together AI built a platform around serving open models efficiently, with options for fine-tuning and dedicated deployments. For teams that want specific open-weight families with customisation, that combination is attractive: you can tune a model and serve it without assembling the stack yourself.
The operational trade-off is familiar. Dedicated capacity, model versions and usage-based billing add variables, and teams whose workloads are plain chat and embeddings often prefer a smaller surface.
Managed simplicity for stock models
Plugsky is the simpler contract: one OpenAI-compatible endpoint, 30+ models, live embeddings and flat monthly self-serve pricing. Agents, RAG pipelines and evaluation harnesses that speak the OpenAI schema keep working after a base URL and model-name change.
- No dedicated capacity to size or pay for.
- Free plan with plugsky-micro and plugsky-lite for staging.
- 14-day full-access trial for frontier models.
- VPC, on-prem and air-gapped deployment options for regulated teams.
- Keep model IDs pinned in configuration, not hard-coded in services.
- Re-run evals before bumping a pinned model version.
The fine-tuning gap and hybrid pattern
Fine-tuning on Plugsky is coming soon, as are audio, images, moderation, files, batch, assistants and responses endpoints. If custom weights are central to your product, keep that path on Together and route general traffic elsewhere. The split is cheap to maintain because both APIs follow OpenAI conventions.
Review the split quarterly so stale assumptions do not keep workloads in the wrong place. Start with the free plan to measure quality and cost, escalate to the 14-day full-access trial for hard prompts, and consult the live pricing page for current plans before moving production traffic.
Honest comparison
| Capability | Plugsky | Together AI | Self-hosting models |
|---|---|---|---|
| Stock model inference | OpenAI-compatible, live | Open-model serving | You run inference |
| Fine-tuning | Coming soon | Available | You own training infra |
| Pricing shape | Flat monthly self-serve | Usage-based | GPU plus ops cost |
| Model choice | 30+ models, one endpoint | Open-model catalogue | Open-weight models only |
| Deployment | Cloud, VPC, on-prem, air-gapped | Managed and dedicated | Your infrastructure |
Frequently asked questions
Is Plugsky a good replacement for Together AI?
For stock chat, tool and embedding workloads, yes. Keep Together for fine-tuned models and dedicated capacity, which Plugsky does not offer yet.
Can I migrate without changing my code?
If your code uses the OpenAI SDK, changing the base URL and model names is usually enough. Together-specific paths need a small adapter.
Is there a free plan?
Yes. plugsky-micro and plugsky-lite are free with no credit card, and a 14-day full-access trial opens stronger models.
When will fine-tuning be available?
Fine-tuning endpoints are coming soon. Check the status page for the current roadmap before planning a migration that depends on them.
How is pricing structured?
Self-serve plans are flat monthly with unlimited fair-use usage and no per-token billing. See the live pricing page for current plans.
Can I run both providers together?
Yes. Fine-tuned or dedicated models stay on Together while general traffic runs on Plugsky, with routing by workload.