2026-09-15 two competitive deltas. (1) Gemini 3.8 Live + 3.8 Live
Extended Thinking (Google DeepMind blog, 1:05 PM ET): voice-agent
line — reasoning while speaking, early verbal cues + live progress
narration, ~real-time visual grounding, 97-language mid-conference
switching, background tool execution; Google-selected benchmarks (AA
Speech-to-Speech #1 82.6, τ-Voice 68.6%, Big Bench Audio 97.7%); in
Gemini API/app/Workspace/Search today; SynthID on all audio. First
big ship of the pacing week from the company with no company
statement — the voice-runtime layer OpenAI's GPT-Live-1 occupies now
has a Google answer with Workspace distribution. (2) Anthropic's
Claude for Financial Advisors draws analyst debate
(WealthManagement.com, ~11:01 AM ET) — potential praised, workflow
fit questioned; the verticals race (OpenAI Financial Services, Sep
10) is now two-sided.
2026-09-15 pricing + integration detail on the voice
line. Gemini 3.8 Live and Extended Thinking both: $0.005/min audio in +
$0.018/min audio out (~$1.38/hr of conversation; token basis $3/$12 per
1M) vs GPT-Live-1 $0.05/min voice session billed per second plus
backend model at its normal rates (~$3/hr voice-only) — Google ~2.2×
cheaper with reasoning/tools included. Architecture delta: Gemini thinks
inside the voice model (Extended Thinking: interleaved speak+reason with
fillers and progress narration, async-only NON_BLOCKING function
calling, client turn_complete=true interrupts generation; base 3.8
Live adds tool scheduling SILENT/WHEN_IDLE/INTERRUPTED) vs OpenAI's
full-duplex speech layer that delegates reasoning/tools to a backend
agent. Live API wrapper still tagged Preview; video frames stream by
default (cost lever). Partners: LiveKit, Pipecat, Vercel, Agora,
Fishjam, Vision Agents. Cloud voice wired to local
tooling — async function calling makes that first-class on Gemini.
AA Speech-to-Speech #1 (82.6) is Google-selected but the price gap is
verifiable from both vendors' docs. Entitlements: AI Pro/Ultra cover app
surfaces + AI Studio prototyping only ("AI Studio UI only" — direct API
use is billed separately), but AI Pro/Ultra bundle $10/$100 monthly Cloud
credits usable on the Gemini API (prepay ≥$5 active; credits consumed
first; $300 Cloud welcome credits excluded post-Mar 2). OpenAI has no
equivalent — ChatGPT and API billing are separate systems.