Speko is a developer API that routes voice models by language. Kompozy is the alternative for creators who want finished, published content, not a voice API.
If you searched "Speko alternative," the honest first question is what you were actually after. Speko is a developer API — the "OpenRouter for voice." One OpenAI-compatible endpoint routes each session to the speech-to-text, LLM, and text-to-speech models its benchmarks rank best for your language, latency, cost, and quality. If that is the job — wiring the best voice model per language into a real-time agent — Speko is a strong tool for it, and this page will not pretend otherwise.
I run Kompozy, and I am not going to argue that a content engine is a better voice router than a voice router. It is not. But many people who reach this term are not developers shopping for another speech API. They found "OpenRouter for voice," assumed it made voice content, hit an endpoint and a benchmark table, and started looking for something that actually produces finished, publishable posts. That person is who this page is for.
The difference is a layer of the stack — and, honestly, a category. Speko gets a voice application the best speech model for the moment. Kompozy generates on-brand video, carousels, quote cards, blogs, and newsletters and publishes them across platforms, no code. One routes the model. The other ships the content.
Everything below is grounded in what each tool actually is on 2026-08-18 — Speko's product from its public pages, Kompozy pricing from ours the same day. No fabricated weaknesses, no straw-man comparison.
Speko is a routing and benchmarking platform for voice AI, built out of Y Combinator's Summer 2026 batch by Beknazar Abdikamalov (previously co-founder and CTO of the voice-AI firm Hupo). Instead of integrating ElevenLabs, OpenAI, Deepgram, AssemblyAI, Cartesia, and other speech providers one at a time, a developer points a voice agent at one OpenAI-compatible endpoint and key, and Speko forwards each session to the speech-to-text, language, and text-to-speech models its benchmarks measure as best for that language and use case. When the numbers change, the routing changes and you rewrite nothing. The benchmark data is the heart of it: Speko scores dozens of speech and language models across roughly ten languages on word error rate, finalize latency, time to first token, and cost per minute, and publishes the results openly at benchmarks.speko.ai — the argument being that no single model wins every language. It integrates with the real-time voice stacks LiveKit and Pipecat, exposes an MCP connection for Claude and Cursor, lists usage-based STT pricing that scales with accuracy, and cites SOC 2 Type II, HIPAA, and GDPR compliance. That is the product: routing, benchmarking, and metered access for voice applications. It returns speech and stops there.
The reason people look past Speko is not that it is weak — it is that it solves a different problem than the one they have. Speko has no content UI: using it means building a voice application in code. It routes and benchmarks speech models for real-time agents, and produces nothing that a marketer would recognize as a post. There is no brand-voice writer, no persona identity, no video or carousel generation, no captioning, no per-platform reframing, no one-source-to-many fan-out, no scheduler, and no publishing. If your bottleneck is "I need finished, on-brand content live across my platforms," Speko does not touch it. None of that is a flaw in Speko; it is a scope boundary. It is developer infrastructure, and infrastructure is supposed to stop at the API. The people who need an alternative are the ones who wanted an application — a tool that turns an idea, a demo, or a script into a published content week without a single line of code, and, notably, one that already includes the avatar voice you would otherwise wire Speko to provide.
| Feature | Speko | Kompozy | Note |
|---|---|---|---|
| Access to many voice models | Yes — routes across many STT/TTS/S2S providers | Partial — HeyGen native TTS for persona video, plus BYO-key | Speko wins on raw voice-model breadth. Kompozy uses a tuned voice stack inside its content engine. |
| Language-by-language benchmarking | Yes — the core product, published openly | No — not a benchmarking tool | Speko only. Kompozy consumes voice, it does not rank speech models. |
| Developer API / OpenAI-compatible endpoint | Yes — the core product | Partial — app-first, with webhooks + Zapier | Speko is API-native. Kompozy is a UI-first app; full REST API is on the roadmap. |
| No-code content generation | No | Yes | Speko requires building a voice app. Kompozy is a point-and-click content engine. |
| Finished social formats (video, image, carousel) | No — returns speech/transcripts | Yes — 18 formats | Kompozy only. Speko outputs voice, not posts. |
| Persona / avatar video generation | No | Yes — Persona Shorts, Frames, HeyGen | Kompozy only — with native voice built in, so no separate TTS integration. |
| Brand-voice governance (Persona Brief, banned words) | No | Yes | Kompozy only. Speko has no concept of your brand. |
| Per-platform reframing + captions | No | Yes — 9:16 / 1:1 / 16:9, burned-in captions | Kompozy only. |
| Multi-platform scheduling & publishing | No | Yes — 9 destinations from one queue | Kompozy only. Speko publishes to nothing. |
| Real-time voice agents (phone, assistant) | Yes — core strength | N/A — not a voice-agent platform | Speko wins; building live voice apps is not what a content engine does. |
| Compliance certifications (SOC 2 / HIPAA / GDPR) | Yes — cited | Standard SaaS data practices | Speko targets regulated voice deployments; Kompozy is a content platform, a different risk surface. |
| Tier | Speko plan | Speko price | Kompozy plan | Kompozy price |
|---|---|---|---|---|
| Entry | Usage-based (pay per minute) | STT from a fraction of a cent up to a few cents/min (model-dependent) | Kompozy Starter | $99/mo (5,500 credits) |
| Mid | Higher volume / production | Usage-based, scales with minutes and model choice | Kompozy Pro | $299/mo (18,000 credits) |
| Top | Enterprise | Custom (compliance, support, volume) | Kompozy Enterprise | Custom (sales-led) |
Here is the honest pitch. Speko and Kompozy are not the same category, so the real question is what you were looking for when you searched. If you want a voice-model API — one key, many speech providers, language-by-language routing, benchmarks — Speko is a strong choice and Kompozy is not a substitute. Go use Speko.
But a lot of people reach that search wanting content, not a routing endpoint, and hit a wall: Speko returns speech, and everything that makes a brand — the video, the carousel, the captions, the voice, the schedule — is left for you to build. Kompozy is the alternative for that person. It generates 18 finished formats and publishes them across nine destinations from one queue, no code, with a Persona Brief that holds one voice across all of it — and its persona video already includes the avatar voice you would otherwise wire Speko to provide.
The two even pair cleanly for the developer who is both building and marketing: ship the voice agent on Speko, then run Kompozy to turn the product story into a published content week. Pick Speko if the job ends at the voice model. Pick Kompozy if the job ends at a published, on-brand week of content.
No. Speko is a developer API that routes and benchmarks voice models — speech-to-text, LLM, and text-to-speech — for real-time voice applications. It has no content UI, generates no video, images, or carousels, and publishes nowhere. For finished, published content without code, a tool like Kompozy is the fit.
It depends on the job. For another voice-model gateway, look at direct provider APIs (ElevenLabs, Deepgram, OpenAI) or a routing layer. For finished, on-brand content published across platforms with no code, Kompozy is the alternative — it owns everything downstream of the audio, and includes native avatar voice.
Yes, and it is a sensible pairing for a founder who is both building and marketing. Ship your voice agent on Speko for best-per-language speech models, and use Kompozy to turn demos, docs, and updates into a persona short, carousel, blog, and newsletter published across nine destinations.
They meter different things, so a direct comparison misleads. Speko bills by voice minutes at model-dependent rates; Kompozy bills by generation credits ($99/mo Starter, $299/mo Pro) for finished, published content. If your goal is content, Speko's per-minute voice bill is not even the same line item — it produces no posts.
No. Kompozy is not a voice router — it runs a curated stack (Claude and OpenAI for copy, gpt-image for images, Gemini for face-lock, HeyGen for avatar video and voice) and lets you bring your own keys. Speko is broader and deeper on voice-model access; Kompozy is deeper on turning content into finished, published posts.