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Apertis

Compare models

Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. S2.1 ProFish AudioRemove
  2. Nemotron 3.5 ASR Streaming Multilingual 0.6BNVIDIARemove
  3. Perceptron Mk1.5PerceptronRemove
  4. S1Fish AudioRemove

4 is the maximum. Remove one to add another.

s2.1-pro vs nemotron-3.5-asr-streaming-multilingual-0.6b vs perceptron-mk1.5 vs s1
AttributeS2.1 Pros2.1-proNemotron 3.5 ASR Streaming Multilingual 0.6Bnemotron-3.5-asr-streaming-multilingual-0.6bPerceptron Mk1.5perceptron-mk1.5S1s1
Pricing
Input$0 / 1M$0 / 1M$0.15 / 1M$0 / 1M
Output$0 / 1M$0 / 1M$1.50 / 1M$0 / 1M
Cache Write (5m)Not applicableNot applicable$0.15 / 1MNot applicable
Cache Write (1h)Not applicableNot applicable$0.15 / 1MNot applicable
Cache ReadNot applicableNot applicable$0.15 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max contextN/AN/A36.9KN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionNoNoNoNo
Function CallingNoNoNoNo
JSON ModeNoNoNoNo
StreamingNoNoYesNo
Catalogue
ProviderFish AudioNVIDIAPerceptronFish Audio
Categoryvoicevoicechatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-07-292026-08-132026-09-252026-07-29
Description
SummaryFish Audio S2.1 Pro text-to-speech. Billed per UTF-8 byte of input text.NVIDIA Nemotron 3.5 ASR multilingual speech-to-text (0.6B). Billed per second of audio.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.