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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. Claude Sonnet 5.5AnthropicRemove
  2. S2 ProFish AudioRemove
  3. S1Fish AudioRemove
  4. Gemini 3.5 TranscribeGoogleRemove

4 is the maximum. Remove one to add another.

claude-sonnet-5.5 vs s2-pro vs s1 vs gemini-3.5-transcribe
AttributeClaude Sonnet 5.5claude-sonnet-5.5S2 Pros2-proS1s1Gemini 3.5 Transcribegemini-3.5-transcribe
Pricing
Input$2.00 / 1M$0 / 1M$0 / 1M$0 / 1M
Output$10.00 / 1M$0 / 1M$0 / 1M$0 / 1M
Cache Write (5m)$2.50 / 1MNot applicableNot applicableNot applicable
Cache Write (1h)$4.00 / 1MNot applicableNot applicableNot applicable
Cache Read$0.20 / 1MNot applicableNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context1MN/AN/A98.3K
Max outputN/AN/AN/AN/A
Capabilities
VisionYesNoNoYes
Function CallingYesNoNoYes
JSON ModeYesNoNoNo
StreamingYesNoNoNo
Catalogue
ProviderAnthropicFish AudioFish AudioGoogle
Categorychatvoicevoicevoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released—2026-07-292026-07-292026-09-25
Description
SummaryClaude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor.Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.