#coding-agents

Research

Claude Fable 5.5 Leaks: Pretraining Targets, Terminal-Bench Trajectory, and Multi-Agent Reasoning Architecture

Anthropic pretraining cluster telemetry leaks reveal Claude Fable 5.5. Following the early September release of Fable 5.1 (55.8% Terminal-Bench 4.0), the expanded Fable 5.5 run targets 78%+ terminal autonomy and recursive constitutional reflection to rival GPT-6 Astra and Opus 5.5. Comprehensive benchmark projections, architectural mechanisms, and API positioning analysis.

2026-09-29 16 min read

Research

Claude Sonnet 5.5 Launches: 70.6% on Terminal-Bench 4.0, $2/$10 Pricing, and GitHub Copilot Integration

Anthropic has officially released Claude Sonnet 5.5. The model scores 70.6% on Terminal-Bench 4.0 and 82.4% on SWE-bench Verified while maintaining the $2 per million input and $10 per million output token price point. Complete evaluation matrix, Sonnet 5.5 vs Opus 5.5 breakdown, AWS Bedrock configuration, and GitHub Copilot deployment details.

2026-09-28 18 min read

Tools & Products

Manus 2.0 Launches: Cue App, Manus Studio, and Multi-Agent Sandbox Architecture for Autonomous Work

Manus has released Manus 2.0, introducing the Cue native companion app, the Manus Studio multi-agent orchestration canvas, and an isolated microVM sandbox architecture. Technical examination of GAIA benchmark results (74.8%), WebArena scores, asynchronous agent scheduling, credential vault security, and subscription tiers.

2026-09-28 17 min read

Research

Leaked Gemini 4 Pro Benchmarks Show Lead Over OpenAI and Anthropic Across DeepSWE, Terminal-Bench, and OSWorld

A leaked benchmark evaluation matrix pits Google DeepMind’s unreleased Gemini 4 Pro against Claude Opus 5.5 and GPT-6 Astra. The document reports scores of 88.7 on DeepSWE v1.1, 95.3 on Terminal-Bench 2.1, and 86.8 on OSWorld 2.0, alongside a 2-million-token context window and aggressive pricing of $2.25 input and $11.25 output per million tokens.

2026-09-28 16 min read