Osworld

Your browser does not support the video tag. 0:00 Claude Haiku 5.5: price, GPT-6 Luna comparison and where to use it Claude Haiku 5.5 in 30 Seconds Price: $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100K tokens; $0.50 / $2.50 above that. That is 90% below Haiku 4.5 and exactly GPT-6 Luna’s rate. Real saving: about 75% on an average workload, once the new tokenizer and the long-prompt tier are counted. Use it for summaries, classification, compaction, browser and computer use, and as a subagent under Sonnet 5.5 or Opus 5.5. Do not use it as the lead model on complex agentic coding. Released October 7, 2026, on the Claude Platform, AWS, Google Cloud and Azure. Model ID: claude-haiku-5-5. Anthropic released Claude Haiku 5.5 on October 7, 2026, closing out the 5.5 family that started with Opus 5.5 on September 22 and Sonnet 5.5 on September 28. There was never a Haiku 5: the line jumped straight from Haiku 4.5. ...

Short Answer Default to Sonnet 5.5. It costs exactly half of Opus 5.5 on input and output ($2 / $10 vs $4 / $20 per million tokens), runs 30%+ faster than Sonnet 5, and lands within a few points of Opus 5.5 on most published benchmarks. Escalate to Opus 5.5 for complex, open-ended work that needs sustained judgment: architecture, long ambiguous investigations, anything where a wrong turn is expensive. Anthropic says Opus 5.5 “remains clearly stronger” there. Sonnet 5.5 was released on 28 September 2026. Model ID: claude-sonnet-5-5. Update, October 7, 2026 With the Claude Haiku 5.5 launch, Anthropic halved Sonnet 5.5 cache reads from $0.20 to $0.10 per million tokens, which it says makes Sonnet 5.5 about 20% cheaper on most agentic work. The table below is updated; the price chart shows the old rate. What Changed With Sonnet 5.5 Anthropic released Claude Sonnet 5.5 on 28 September 2026, six days after Opus 5.5 . It is available in the Claude apps, Claude Code, the Claude API, and on Amazon Web Services, Google Cloud and Microsoft Azure. Haiku 5.5 follows in the coming weeks. ...

Meta shipped Muse Spark 1.3 on September 2, 2026: a closed multimodal reasoning model built for long-running agentic workflows, multi-agent setups and coding. Two numbers made the headlines. It scores 75.4 on DeepSWE v1.1, edging past Claude Opus 5, and it hits 98.1% retrieval across a full million tokens of context. Both are real. Both come with a footnote, and the footnotes are what this post is about. What Is Muse Spark 1.3? 🧠 Muse Spark is Meta Superintelligence Labs’ closed flagship series. Version 1.3 succeeds 1.2, and the pitch is not producing one good answer but carrying a long task all the way to the end. ...

GPT-6 Astra in 30 Seconds GPT-6 Astra is OpenAI’s new flagship, announced on September 3, 2026. The company calls it “the world’s most intelligent and aligned model”. There is no Sol/Terra/Luna split this time. The lineup is Astra and Astra Pro. API pricing is $10 per million input tokens and $50 per million output tokens: 2.5x GPT-5.6 Sol’s promotional price, and identical to Claude Fable 5.1. The scores are high but footnoted. The headline 98.6% on ARC-AGI-3 came from a custom harness; the same model scores 62.7% on the standard one. Astra is the first OpenAI model to cross the Critical cybersecurity threshold in the Preparedness Framework. Standard access refuses parts of that work outright. Rollout is staged: Daybreak enterprise customers first, then Plus, Pro, Business, Enterprise, the API and AWS. Pro, Business and Enterprise also get Astra Pro. OpenAI launched GPT-6 Astra today, September 3, 2026. At the press briefing, president Greg Brockman first conceded that AGI remains a “gray, fuzzy thing”, then went ahead anyway: “I think it’s not unreasonable to feel that we are now in the AGI era.” He closed with the same line: “Welcome to the AGI era.” ...

TL;DR: Gemini 3.8 Flash in 30 seconds Gemini 3.8 Flash landed on September 2, 2026, three weeks after 3.7 Flash. That is the third Flash release in three months. Price did not move: $0.75 input, $3.75 output per million tokens. The promo ends December 31, 2026, then it doubles. A second model shipped alongside it: Gemini 3.8 Flash Cyber, tuned for vulnerability discovery and locked behind the new Fairwind Program. The benchmark table is split. It tops the chart on finance, legal, long video and chart reasoning, and it trails Claude Opus 5 badly on long horizon terminal and computer use work. The model “works harder”: more reasoning steps, more iterative tool calls. Same sticker price, potentially a bigger bill. The Flash release cadence has stopped being funny. 3.6 Flash shipped on July 21, 3.7 Flash on August 13, and Gemini 3.8 Flash today, September 2, 2026. Three releases in three months. ...