Sonic 2

Current

2.0

shipped 1mo · 11 Oct 2026

Ultra-low latency streaming voice engine with 85ms TTFB for conversational agents.

Specification

Latency: 85ms TTFB
Languages: 42 languages
Access: Cartesia API & Edge SDK

Modalities: voice, text

Sonic 2 — 6-Axis Capability Radar

HEURISTIC ESTIMATE

Sonic 279 IDX

Preset genre reference

These scores are rough estimates from category presets, catalog specs, and keywords in release notes. They are not measured benchmarks or test results. Catalog prices and context windows may refer to a different model variant.

Hover or tap an axis to inspect its estimate

Reasoning & Logic· v2.0 architecture

66EVEN

Code & Tool Agency· voice + text pipeline

58+8

Multimodal Fidelity· Modalities: voice, text

95+4

Speed & Throughput· Low-latency streaming tier

99+7

Cost & Openness· Cartesia API & Edge SDK

84EVEN

Context & Horizon· 1 tracked release

72EVEN

RELEASE CADENCE EXPLORER

Shipping Cadence & Next Drop Forecast

WITHIN ESTIMATED INTERVAL

This is an uncalibrated estimate from limited catalog history. A ratio of 100% means one estimated interval has elapsed; it is not a probability. Next-release dates and versions remain unconfirmed.

Average Release Cadence

80 days

±21d variance

Elapsed Since Last Drop

31 days

Shipped on 2026-10-11

Annual Velocity

4.6 drops/yr

0 observed intervals · category preset

Cadence Estimate

2026-12-30

Next version: Unannounced

Elapsed / average interval: 39%61% remaining in cycle

Optional AI cadence commentary

Summarize the recorded history and its limitations. Future releases remain unconfirmed.

Version history

1 releases tracked

2.0
2.0
major11 Oct 2026 · 1mo
Cartesia Sonic 2 sets real-time voice benchmark with sub-90ms full-duplex conversational synthesis.
- Engineered specifically for low-latency agent architectures.
- Emotion control slider via WebSocket API.
Recorded announcementGeneral link · release source needed ↗

Also in Voice & speech