Tools & releases
Anthropic Releases Claude Opus 5 with Near-Fable Intelligence at Half Cost
July 24, 2026 4 min read
AI-assisted · editor-reviewedHow we use AI
Anthropic released Claude Opus 5, positioning it as the new default model on Claude Max and top model on Pro. It delivers near Claude Fable 5 intelligence across benchmarks at half the price.
Impact: High
Why it matters
Claude Opus 5 provides greatly improved performance for the same cost as its predecessor, Opus 4.8, while competing with Fable-tier execution.
TL;DR
- 01Claude Opus 5 delivers near Fable 5 intelligence at half the price.
- 02Passes more tasks on Zapier AutomationBench for the same cost per task.
Benchmark Breakthroughs and Efficiency
Claude Opus 5 provides greatly improved performance for the same cost as its predecessor, Opus 4.8, while competing with Fable-tier execution. On Zapier AutomationBench, Opus 5 passed around 1.5x the next-best model's tasks for the same cost per task.
Agentic Autonomy and Verification
- Autonomous Tooling: In Frontier-Bench testing without visual input access, Opus 5 constructed its own computer vision pipeline to extract pixel geometry and rebuild a 3D FreeCAD model.
- Root Cause Fixing: On real-world open-source bug fixes, the model identified root underlying issues rather than applying superficial surface patches.
- Domain Logic: Financial modeling evals demonstrated 9 percentage points higher accuracy with a third fewer turns and tool calls and 60% less time.
#Claude Opus 5#Claude Fable 5#Zapier AutomationBench#FreeCAD