# 🤖 AI Agents Weekly: GPT-5.6 Family, Meta Muse Spark 1.1, Grok 4.5, SWE-1.7, Robostral Navigate, The Harness Effect, and More > Source: > Published: 2026-07-11 16:33:08+00:00 # 🤖 AI Agents Weekly: GPT-5.6 Family, Meta Muse Spark 1.1, Grok 4.5, SWE-1.7, Robostral Navigate, The Harness Effect, and More ### GPT-5.6 Family, Meta Muse Spark 1.1, Grok 4.5, SWE-1.7, Robostral Navigate, The Harness Effect, and More In today’s issue: OpenAI ships the GPT-5.6 family Meta releases Muse Spark 1.1 OpenAI launches ChatGPT Work agent xAI releases Grok 4.5 for coding Cognition ships SWE-1.7 at 1000 tok/s Mistral drops Robostral Navigate Harness design sets agent economics OpenAI launches GPT-Live voice Google open-sources Gemma 4 Tencent open-sources 295B Hy3 Google ships Cloud Run sandboxes Nous puts Hermes Agent in the cloud Microsoft releases Flint for agents Ternlight runs embeddings in-browser GPT-5.6 proves 50-year math conjecture Databricks benchmarks coding agents OpenAI audits SWE-Bench Pro FrontierFinance benchmarks agent analysts Paper turns memory into navigation GitLost tricks GitHub’s AI agent Anthropic finds a global workspace Sakana replays Picbreeder with VLMs And all the top AI dev news, papers, and tools. ## Top Stories ### OpenAI Ships the GPT-5.6 Family OpenAI began rolling out its GPT-5.6 family, Sol, Terra, and Luna, across ChatGPT, Codex, and the API. **Capability tiers:** The number marks the generation while Sol, Terra, and Luna are durable tiers that advance on their own cadence. Sol is the flagship for the hardest tasks, Terra matches GPT-5.5 at lower cost, and Luna is the fastest and cheapest.**Built for agents:** GPT-5.6 is the new default brain behind Codex and ChatGPT Work, tuned for long-horizon tool use and coding.**Pricing:** Sol runs 5 dollars/30 dollars per million input/output tokens, Terra 2.50 dollars/15 dollars, and Luna 1 dollar/6 dollars.**Rollout:** Live now in ChatGPT, Codex, and the API, with the Codex desktop app merging into the ChatGPT app on Windows and Mac. ### Meta Releases Muse Spark 1.1 Meta Superintelligence Labs released Muse Spark 1.1, a multimodal reasoning model built for agentic tasks, and opened the Meta Model API to developers for the first time. **Agent orchestration:** Works with native tools, MCP servers, and custom skills, and can act as a main agent that plans and delegates work to parallel subagents.**Agentic benchmarks:** Posts SOTA scores on MCP Atlas (88.1), JobBench (54.7 vs Opus 4.8 at 48.4 and GPT-5.5 at 38.3), and Humanity’s Last Exam with tools (62.1 vs Opus 4.8 at 57.9), plus FinanceBench.**Long context:** Supports a 1M-token context window for long-horizon, multimodal work.**Open API and pricing:** Meta Model API is in public preview at 1.25 dollars/4.25 dollars per million input/output tokens, with 20 dollars in free credits for new accounts.