Claude Opus 4.8: Benchmarks, Dynamic Workflows, Pricing
May 29, 2026
Anthropic shipped Claude Opus 4.8 on May 28, 2026: 88.6% SWE-bench Verified, dynamic workflows with up to 1,000 subagents, and a 3x cheaper fast mode.
#swe-bench
Kimi K2.6: Open-Weight 300-Agent Swarm Tops GPT-5.4 (2026)
April 27, 2026
Moonshot AI's Kimi K2.6 (April 20, 2026): a 1T-parameter open-weight MoE that orchestrates 300 sub-agents and tops GPT-5.4 on SWE-Bench Pro at 58.6%.
GLM-5.1: The Open-Source Model That Beat GPT-5.4
April 19, 2026
GLM-5.1 (April 2026): Z.ai's 754B open-weight model scored 58.4% on SWE-bench Pro, beating GPT-5.4 and Claude Opus 4.6 on real coding benchmarks.