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4 AI stories from May 28-31, 2026: OpenAI updates GPT-5.5 Instant and sets sunset dates for o3 and GPT-4.5, GitHub Copilot billing backlash tops 900 downvotes, Perplexity Computer lands in Word and Excel, and ElevenLabs Dubbing v2 preserves speaker emotion across 90+ languages.

· by Pondero Newsdesk · 4 stories

AI news daily brief: 2026-05-31

Four stories from May 28-31, 2026: one OpenAI model update with two model retirement announcements, one developer-community backlash story about GitHub Copilot billing, one Perplexity product launch bringing its Computer agent into core Microsoft 365 apps, and one ElevenLabs model release focused on performance-conditioned dubbing.

OpenAI refreshes GPT-5.5 Instant, retires Canvas, and sets sunset dates for o3 and GPT-4.5

OpenAI pushed an update to GPT-5.5 Instant on May 28, 2026, aimed at making responses shorter, less bullet-heavy, and more conversational. The update applies to both ChatGPT and the API, per the company's release notes. Canvas is no longer available inside GPT-5.5 Instant or GPT-5.5 Thinking. Writing and coding tasks that previously used the Canvas side panel now go through writing blocks and code blocks embedded directly in chat. Paid users retain access to Canvas through legacy models during a transition window.

Alongside the model update, OpenAI announced formal retirement timelines for two older ChatGPT models. GPT-4.5 leaves ChatGPT on June 27, 2026, following a 30-day sunset period. OpenAI o3 leaves ChatGPT on August 26, 2026, following a 90-day sunset period. Both models remain available through the API for now, per the same release notes. The June 27 GPT-4.5 removal will be worth watching for user friction; it is the first removal affecting a paid-only model that had no direct free-tier replacement.

Read more: ChatGPT Release Notes

Developers push back on GitHub Copilot token-based billing as it goes live June 1

GitHub Copilot's shift from per-request-unit pricing to AI-Credits billing goes live on June 1, 2026, per the GitHub billing announcement. The official announcement thread on the GitHub community forum accumulated more than 400 comments and roughly 900 downvotes as of May 30. Developer complaints centered on three points: agentic coding sessions that burn through credits at a rate of $30-40 per run, the removal of the PRU fallback model, and unclear rollover policies for unused credits. TechCrunch described the mood as blunt, quoting forum sentiment as "What a joke," in its May 30 coverage.

Base plan prices are unchanged at $10 per month for Pro and $39 per month for Pro+, per the same GitHub announcement. The binding constraint for heavy users shifts from PRU count to the included AI-Credit allowance. Watch June 1 real-world usage reports: if agentic sessions spike bills as developers predict, GitHub may announce credit-cap safety rails quickly to contain further backlash.

Read more: GitHub Copilot billing announcement and 'What a joke' coverage

Perplexity Computer arrives as native add-ins in Word, Excel, PowerPoint, and Outlook

Perplexity announced on May 28, 2026, that its Computer agent is now available as native add-ins inside Microsoft Word, Excel, PowerPoint, and Outlook. The add-ins are available through the Microsoft Marketplace. Once installed, Computer appears in a side panel within each app. Access requires Perplexity Pro, Max, Enterprise Pro, or Enterprise Max plans, per the company's announcement.

Per the Perplexity announcement, Computer has handled more than $4.4 billion in labor-equivalent work since launching less than three months ago. The same announcement reported that nearly 40% of Computer users had been manually exporting outputs into Microsoft formats before this integration shipped. In Excel, users can build financial models and pivot tables; in Word, draft or rewrite documents; in PowerPoint, generate or rewrite slides; in Outlook, compose or rewrite emails using thread context. Perplexity's own Teams integration launched earlier in May; this release expands to the full core M365 suite. Watch whether Microsoft's Copilot team responds by tightening or opening third-party agent access inside M365.

Read more: Perplexity announcement

ElevenLabs Dubbing v2 preserves speaker emotion and pacing across 90-plus languages

ElevenLabs launched Dubbing v2 on May 28, 2026. The model conditions directly on the original speaker's audio performance rather than generating output from a transcript alone, preserving tone, pacing, delivery, and emotional intent across target languages, per the company's announcement. The model covers 90-plus languages and accents, automatically clones the speaker's voice for each language, and ships a sync-aware translation system that aligns start times, stops, and rhythm without manual adjustment.

Dubbing v2 is available in ElevenCreative and ElevenProductions. A promotional free tier ran through seven days from launch, offering between 1 and 60 minutes of free usage depending on plan tier; that window closes around June 4. API access is described as "coming soon." The key next milestone is the API release and its pricing, which will determine whether Dubbing v2 becomes viable for developers building localization pipelines at scale.

Read more: ElevenLabs Dubbing v2 announcement

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