Open-source coding agent OpenCode (@opencode) said GPT-6 Sol, GPT-6 Luna, and Claude Opus 5.5 are now available in OpenCode, wiring the same-day OpenAI and Anthropic launches into an open coding-agent workflow.
OpenAI (@OpenAI) launched GPT-6 Sol and GPT-6 Luna in the GPT-6 family, carrying forward GPT-6 Astra advances in professional work, factuality, coding, computer use, and alignment into faster, more affordable models for work at scale. With more efficient caching and inference, Sol/Luna API prices are 50% lower than GPT-5.6 promotional pricing. OpenAI president Greg Brockman (@gdb) separately highlighted the coding and computer-use gains.
Cursor (@cursor_ai) announced Claude Opus 5.5 is available in Cursor. Officially it is the new top model on CursorBench at 57.8% (Max) and costs about 40% less per task than Opus 5, wiring Anthropic’s same-day Opus 5.5 launch into a leading AI IDE.
Anthropic (@AnthropicAI) confirmed Claude Opus 5.5 is available today; see the same-day @claudeai launch thread. First Claude 5.5 model, Fable 5.1-level on most tasks, ~40% cheaper than Opus 5 on typical workloads.
Anthropic confirmed Claude Opus 5.5 is available. It is the first model in the new Claude 5.5 family, performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.
Anthropic / Claude (@claudeai; confirmed by @AnthropicAI) launched Claude Opus 5.5 today, the first model in the new Claude 5.5 family. Officially it matches Claude Fable 5.1 on most tasks, and is a major step up from Opus 5 on agentic coding, computer use, and knowledge work. At default settings typical workloads cost about 40% less than Opus 5. Pro, Max, and Team five-hour usage limits are increased, with a bankable rate-limit reset for subscribers.
Elon Musk (@elonmusk) highlighted that Grok 4.7 is doing real engineering work at Tesla. The quoted post (@yunta_tsai) says Grok Build teams spent weeks tuning the 4.7 harness for cleaner prose, stronger self-validation, better thinking efficiency, long-horizon monitoring, and VLM/multimodal tasks—and that many FSD and Cybercab features were personally shipped via overnight agents.
DHH (@dhh) announced Alibaba Cloud as a Founding Corporate Patron of the Omacom Foundation: $3 million in funding, collaboration on Omarchy China, and bringing Omarchy to the newly announced Qwen Book. He argues agentic computers need a native agentic OS. Details: omarchy.org news post.
Kimi.ai (@Kimi_Moonshot) launched the Kimi Browser Extension (formerly Kimi WebBridge): chat with Kimi in a browser sidebar to navigate sites, fill forms, and finish tasks. Record repetitive steps once as a Skill and let Kimi replay them next time. Available now at kimi.com/products/kimi-browser-extension and the Chrome Web Store.
Tencent Hunyuan (@TencentHunyuan) introduced WebCraftBench for the common failure mode where an agent claims a site is done while the homepage errors, buttons overlap, or an unrequested login flow appears. Agents operate the live app; coverage-guided exploration finds unreached paths; aesthetics, usability, and request match are scored. On 197 human-validated pairs it matches human preference 85.3%. Paper: https://arxiv.org/abs/2609.15387
@XFreeze reports Grok 4.7 Fast is live in Grok Build and Cursor: the same Grok 4.7 model on faster infra with roughly 2× output speed, at about 2× standard token rates. It is not in Grok Build’s free tier and is not on the public xAI API. Screenshots show Cursor’s “Grok 4.7 High Fast” picker and Grok Build’s Fast variant note.
@Kimi_Moonshot announced Kimi K3 is now on Amazon Bedrock for coding, document analysis, and extended agent workflows, with Bedrock access, encryption, and auditing controls, plus explicit prompt caching. AWS published a Bedrock model card so teams can call K3 inside the AWS stack.
@Zaddyzaddy published @BugBunny_ai VulnPR-100 results: on 100 PRs with known vulns (up to one hour each), MiMo-V2.6-Pro found 46 for $8.27 — best open-weight score, matching GPT-6 Astra at roughly 22× lower review cost. MiMo-V2.6-Flash found 41 for $3.47. That is about $0.18 per vuln found for Pro and $0.08 for Flash.
@ArtificialAnlys evaluated StepFun Step 5 Preview (600B-total / 27B-active MoE): Artificial Analysis Intelligence Index 44, matching Kimi K3 (max) at about $0.72 per Index task (~2.8x cheaper). Pricing is about $1/$2.70 per 1M input/output tokens with $0.05/M cached input; 1M context; open weights planned for October 15. It still lags peers on agentic evals such as GDPval-AA and Terminal-Bench 4.0.
Elon Musk posted an announcement of Grok 4.7 with an image, signaling the latest Grok model from xAI.
Elon Musk posted “Grok 4.7.” Same-day discussion said the model improves on Grok 4.6 for agentic coding and knowledge work, and that it works best with the xAI Build harness.
Elon Musk announced Grok 4.7. He described it as a strong mix of intelligence, speed, and low cost, said it works especially well with xAI's Build harness, and positioned it as a competitive everyday workhorse for agentic coding.
Elon Musk announced Grok 4.7. The model is a notable upgrade over Grok 4.6 at the same price and speed, working longer on hard tasks, checking its work more carefully, and shipping with the strongest safeguards to date. Musk said it places SpaceXAI third behind Anthropic and OpenAI for agentic coding, while remaining faster and cheaper. It is available in Cursor, Grok Build, and the Grok API.
@vercel announced Grok 4.7 is available on Vercel AI Gateway with 40% off through September 27, and can be tried with v0, eve, and fx. For developers building apps and coding agents on the Vercel stack, this lowers the cost of trying Grok 4.7.
@ArtificialAnlys published AA-Briefcase results: Grok 4.7 sits behind only Anthropic models, ranking just after Opus 5 at about half the cost per task. Versus Grok 4.6 on public AA-Briefcase-Lite due-diligence decks, Analytical Quality Elo rose 1698 to 1994 while Presentation Elo slipped 1531 to 1499. Example deck API cost: Grok 4.7 (xhigh) about $8 vs Grok 4.6 (xhigh) about $4.40.
