AI Assistant Voice and Multimodal Features Compared

As read on October 2026, OpenAI’s ChatGPT Voice page, Anthropic’s voice mode page, and Google’s Gemini Live page document different voice access rules, limits, and input support. Chat Picker has not tested the assistants for voice or multimodal performance, so it makes no quality ranking.

What the vendors document

Voice access. OpenAI says Live can use web search and memory, handle text and images together, and vary by plan, workspace, region, app version, and parental controls. The same page lists limited GPT-Live-1 mini access on Free; 3 hours of GPT-Live-1 mini on Go; 3 hours of GPT-Live-1 on Plus; 15 hours on the $100/month Pro tier; and unlimited Live on the $200/month Pro tier, with Chat-mode use measured over a rolling 24-hour period. OpenAI’s ChatGPT Voice page

Anthropic says beta Voice mode is available on Free, Pro, Max, Team, and Enterprise across Claude Mobile for iOS and Android, Claude Desktop, and the web. It supports hands-free and push-to-talk operation, carries context when switching between text and voice, and counts voice against regular plan limits. It can use web search and connected Gmail, Google Calendar, Google Docs, and Slack; Free allows one connected tool, paid plans allow more, and several tools at once can add a short delay. Anthropic’s Use voice mode page

Google says Gemini Live answers verbally and can be interrupted. Its page is for Android, requires an Android phone or tablet and either the Gemini app or Gemini as the mobile assistant; Google says it is unavailable in the Gemini web app and Google Messages, updates are gradual, Gems cannot be used, and Farsi is unsupported in the mobile app. Google’s Talk naturally with Gemini Live page

Images, files, and tools. OpenAI says Live can work with text and images in the same chat but not video or screen sharing; its uploads FAQ sets a 20MB limit per image. OpenAI’s ChatGPT Voice page and OpenAI’s File Uploads FAQ

Anthropic says PDFs of 100 pages or fewer are analyzed for both text and visual elements, PDFs from 101 through 1,000 are processed as text only, and embedded images in non-PDF documents are not interpreted. Its Voice page does not describe image analysis during a spoken exchange. Anthropic’s Upload files to Claude page and Use voice mode page

Google says Gemini Apps can accept documents, spreadsheets, notebooks, photos, and videos, while its Gemini Live page does not say whether those inputs can be combined with voice during a live exchange. Google’s Upload & analyze files page and Gemini Live page

Data and accuracy. For chat training, OpenAI’s pricing page lists an opt-out on Free, Go, Plus, and Pro; Anthropic’s pricing page lists one on Free, Pro, and Max and says Team is not trained on by default; Google’s plans page states no setting, so Chat Picker marks it “Not verified.”

OpenAI’s accuracy note says ChatGPT may be incorrect or misleading and can sound confident when wrong. Anthropic’s incorrect-response note says not to use Claude as a sole source of truth and to inspect original sources. Google’s guidelines say Gemini should not generate factually inaccurate output that could cause significant real-world harm, with context considered.

Price and access. OpenAI lists ChatGPT Plus at $20 per month, Anthropic lists Claude Pro at $20 monthly or $17 per month with annual billing and $200 up front, and Google lists Google AI Pro at $19.99 per month. OpenAI’s Plus details, Anthropic’s pricing page, and Google’s plans page

Heavier options include Claude Max from $100 per month and Google AI Ultra at $99.99 or $199.99 per month. Anthropic’s pricing page and Google’s plans page Confirm current terms before subscribing because plans and prices change.

What the documentation cannot tell you

The documentation establishes intended features and limits, not performance in your setting. It does not tell you actual voice delay, accent recognition, turn-taking quality, joint voice-image grounding, or tool reliability. Your controlled trial must answer those questions for your material and workflow.

How to check it yourself

1. Voice latency and interruption. Give: From silence, say: “Read this: The train leaves in the morning. After I interrupt you, continue with the phrase morning.” Interrupt during the reply. Look for whether it waits, stops, and resumes. Write the plan, connection type, response delay in seconds, and any cutoff.

2. Accent and language. Give: Read naturally: “José wants green tea from the café on Pine Street after the pharmacy closes.” Ask: “What does José want, and where is the café?” Repeat in every language you need. Look for substitutions in the name, place, and wording. Write the exact mishearing and whether any requested fact changed.

3. Voice and image fusion. Give: Attach a photo you may use containing a red mug, a blue notebook, and a plant. Say: “Look only at this photo. What is beside the notebook? Is any printed text legible? If not, say so.” Look for spatial grounding, text recognition, and uncertainty. Write the relationship, text reading, and any invented detail.

4. Voice-to-action. Give: In a test mailbox, connect a read-only email tool. Say: “Search my email for the exact phrase launch budget and return only the subject and date of the newest matching message. Do not open attachments, draft, send, or change anything.” Look for the correct tool, narrow result, and no extra action. Write the tool used, fields returned, and any action attempted. If the connection is unavailable, record that instead.

5. Privacy and accuracy. Give