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Claude Sonnet 5.5: Same $2/$10 Price, 30% Faster, Fewer Tokens

Originally published on AI Tech Connect . What changed on 28 September A new mid-tier model. Anthropic released Claude Sonnet 5.5 on 28 September 2026, six days after Opus 5.5 cut its token prices by 20%. The API identifier is claude-sonnet-5-5. Same list price. $2 per million input tokens, $10 per…

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  1. 2026-10-01 05:32 · DEV Community — Machine Learning
    Claude Sonnet 5.5: Same $2/$10 Price, 30% Faster, Fewer Tokens

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  1. Introducing Claude Sonnet 5.5 on AWS — AWS Machine Learning Blog
  2. Gemini 4 Argon has a 1M-token output limit, up from 64K for prior models; it initially costs $2/1M input and $10/1M output tokens, rising to $4 and $20 later (Matthias Bastian/The Decoder) — Techmeme
  3. Anthropic warns of ‘existential risks to humanity’ in IPO prospectus — Financial Times AI
  4. With Opus 5.5 and Sonnet 5.5 both apparently outperforming Sol and Astra, Anthropic has technically made OpenAI’s Dev Day a lot more interesting. OpenAI is reportedly planning 20+ launches tomorrow, so I’m really curious to see what they have in store now. The timing couldn’t be more interesting. 😅 — r/OpenAI
  5. Introducing Anthropic models on Amazon Bedrock for in-region inference in Seoul and Singapore — AWS Machine Learning Blog
  6. Opus 5.5 vs. GPT-6 Sol: which model won my blind taste test? — How I AI
  7. Amazon Bedrock expands Claude model availability to in-country inferencing in India — AWS Machine Learning Blog
  8. Kimi K3: A Claude clone or something else? — CoreWeave Blog

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