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Model Releases

219 summarised stories about Model Releases, each linking back to the original source. Browse all topics →

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Wednesday, 23 September 2026

Meta’s Muse reaches 500K users and 250K daily actives in its first week (per The Information)

The Information 3 weeks ago 47 ● 26 sources

Meta’s Muse reached 500K users and 250K daily active users in its first week, according to The Information. The single most concrete detail is 500K users in that first week. This suggests rapid early adoption and drives more attention to Muse’s rollout and usage.

[AINews] Claude Opus 5.5, the new default model for AINews — and everybody cuts prices 40-50%

Latent Space 3 weeks ago 43 ● 8 sources

Anthropic shipped Claude Opus 5.5 as the new default Claude 5.5-family model, with Anthropic claiming task capability similar to Claude Fable 5.1 plus speed and writing improvements. Token pricing was cut 20%, from $5/$25 to $4/$20 per 1M input/output tokens. AINews is migrating to Opus 5.5 immediately and broader Claude usage defaults, session limits, and rate-limit handling are updated alongside widespread API price reductions.

What AI slowdown? OpenAI, Anthropic release dueling models as price wars heat up

Fortune 20 ● 7 sources

OpenAI and Anthropic released cheaper versions of their top AI models within hours of each other amid increased competition and business cost scrutiny. Anthropic said Claude Opus 5.5 runs at about 40% less cost than Opus 5, and OpenAI cut API costs by 50% for GPT-6 Sol and GPT-6 Luna versus its Astra predecessor pricing. The pricing pressure shifts customers toward lower-cost “everyday” models and forces both labs to pass efficiency savings through rate limit and API price cuts, potentially squeezing future profits.

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