Decision support
Sonic 3.5 vs GPT-Realtime-2.1
Compare canonical objects directly. The useful dimensions change with the object type, so model and hardware comparisons stay separate.
Sonic 3.5
Cartesia
Benchmark results
No benchmark results have been matched to these models yet.
Model specifications
Release date
June 15, 2026
July 6, 2026
Context window
—
128K
Native context
—
—
Max output tokens
—
32,000
Knowledge cutoff
—
2024-09-30
Open weights
Closed
Closed
Parameter count
—
—
API pricing · USD per 1M tokens
Input
—
—
Output
—
—
Cached input
—
—
Cache write
—
—
Capabilities and modalities
Input modalities
text
text, audio, image
Output modalities
audio
text, audio
Tool calling
—
Supported
Reasoning option
—
Supported
Supported options
—
tools, reasoning
Capabilities
—
—
Architecture and availability
Architecture
—
—
Model families
—
—
Tokenizer
—
—
Instruction format
—
—
License
proprietary
—
Providers
0
0
Provider endpoints
0
0
Ollama variants
0
0
Metadata source
curated
ai-research
A dash means the field is not reported. Provider-specific performance and pricing may differ.