Sonnet 5.5 becomes the first Sonnet version to prevent "inference extraction", with its internal reasoning process now bound to user accounts.

Bitcoin briefly dipped below $82,300, rebounding to around the $82,500 level with a 1.94% 24-hour decline that broke below the recent key support of $83,000. FxPro previously noted that if BTC breaks decisively below $83,000, sellers could regain market control, potentially pushing prices quickly toward the $80,000 mark. The latest decline coincided with rising macro risks. Reports indicate the White House has asked the Pentagon to draft a military strike plan against Iran, a development that lifted Brent crude by roughly 2% to retake the $102 per barrel level. The U.S. 10-year Treasury yield climbed to 5.31%, near its highest since 2002, further weighing on risk assets. Major cryptocurrencies were broadly lower: XRP fell nearly 4% to $1.42, Dogecoin (DOGE) dropped around 3%, Ethereum (ETH) declined about 3% to $2,570, while HYPE and Solana (SOL) both fell over 2%. On the prior day, roughly $550 million in crypto leveraged positions were liquidated, the majority of which were long positions. Bitcoin has fallen for two consecutive trading days recently, both times alongside rising oil prices and U.S. Treasury yields. If Brent crude falls back below $100, it could ease some of the current pressure on risk assets.

Bithumb will list CTR on its KRW market.

Ethereum’s Glamsterdam upgrade was activated on the Sepolia testnet this Tuesday. The block gas limit has been raised from roughly 60 million to nearly 200 million, lifting the processing capacity budget by over threefold, as developers leverage the test to validate network scaling-related changes. CoinDesk’s observation of more than 25 consecutive test blocks shows actual gas usage ranges from 52 million to 92 million, accounting for only 26% to 46% of the available cap—no near-full load scenarios have been recorded. Per data from test team ethPandaOps, during a six-minute vote early Thursday, all 32 planned blocks were successfully proposed, and 99.97% of eligible testnet staked shares voted to finalize the upgrade. Glamsterdam also adjusted gas costs for certain operations, optimized transaction execution and data retrieval mechanisms, granting validators more time to verify transaction computations while enabling software to prefetch account and storage data tied to transactions to enhance parallel processing capabilities. The next testnet, Hoodi, is tentatively set to launch on October 27, with exact timing dependent on Sepolia test outcomes. To date, the Ethereum mainnet has not confirmed a specific date for the Glamsterdam upgrade.

Insight Beating AI News Flash: Anthropic’s newly released Claude Haiku 5.5 is exerting intense competitive pressure—akin to a "kill line"—on Chinese domestic low-cost large language models (LLMs). On October 8, Hong Kong-listed LLM firms saw broad declines: MiniMax fell over 9%, Zhipu AI dropped more than 6%, while the Hang Seng Tech Index fell roughly 1% in the same period. Claude Haiku 5.5’s base API pricing is $0.1 per million input tokens and $0.5 per million output tokens. By comparison, DeepSeek V4.1 Flash charges $0.3 and $1.2 per million input/output tokens during peak hours, sliding to $0.15 and $0.6 during off-peak periods. Zhipu AI’s GLM-5.3 Flash has standard pricing of $0.15 and $0.5 per million input and output tokens respectively. Claude Haiku 5.5 already holds clear unit price competitiveness when input tokens do not exceed 100,000. Artificial Analysis awarded Claude Haiku 5.5 a composite intelligence score of 43, outperforming GLM-5.3 Flash (42), DeepSeek V4.1 Flash (39), and Xiaomi’s MiMo-V2.6-Flash (38). In the Terminal-Bench 4.0 programming benchmark, Claude Haiku 5.5 and GLM-5.3 Flash tied at 33%, ahead of DeepSeek (27%) and MiMo (23%). However, Claude Haiku 5.5’s strengths are primarily in its base pricing and performance under maximum inference load. It has higher token consumption, and long context inputs trigger a fivefold pricing surcharge.

According to Bitget market data, Hong Kong-listed artificial intelligence concept stocks fell broadly, with MINIMAX down over 10%, Zhipu down more than 6%, Xunce down nearly 5%, and Baidu and Meituan seeing minor declines.

Former Coinbase employee Edward Lee announced in a post that he has joined Polymarket as product lead, overseeing product development for Polymarket US and its international on-chain trading platform. Lee stated he has spent the past decade working on crypto industry infrastructure, and will now shift focus to building trading markets operating on top of these infrastructures, with the goal of advancing a vision of "everything tradable". He added that prediction markets will serve as the starting point for this vision, and invited developers, traders, and partners from regulated markets and DeFi sectors to reach out to him. According to his profile, Lee has previously built and operated trading platforms at Coinbase, Circle, Poloniex, and LINE.