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Radar · Sonnet 5.5 | Sensif.ai

Radar · Entity

Sonnet 5.5

Everything the desk has tracked for this model.

Model

Model releases

Sonnet 5.5 5.5

weights unknown

Anthropic · released Sep 28, 2026

text

signal

70

Research papers

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Recent source items

most recently published, newest first

Claude Haiku 5.5Oct 7, 2026
[AINews] not much happened todayOct 3, 2026
[AINews] Gemini 4 Argon: GDM’s answer to Astra/Fable, with 1M outputOct 1, 2026
[AINews] OpenAI DevDay 2026: Dots, 6.1 Sol, Ultrafast, Decisions API, Agents API, Spaces, Marketplace, and 1.2 Billion ChatGPT WAUSep 30, 2026
Claude Code’s Next Era — Thariq Shihipar, AnthropicSep 29, 2026
Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partnerSep 28, 2026
Claude 5.5’s first model has landed: GPT-6 Sol and GPT-6 Luna arrive on the same day as OpusSep 23, 2026
[AINews] Claude Opus 5.5, the new default model for AINews — and everybody cuts prices 40-50%Sep 23, 2026