Anthropic Launches Claude Opus 5: Near Fable 5 Intelligence at Half the Price
Anthropic shipped Claude Opus 5 on July 24, and the pricing decision is the real story. The model costs $5 per million input tokens and $25 per million output tokens through the API, the same as Opus 4.8. The headlines say “half price” because those numbers are 50% less than Fable 5 at $10/$50. For subscription users, Opus 5 is available on both Pro ($20/mo) and Max ($100-200/mo) plans starting day one.
Benchmarks put Opus 5 within 0.5% of Fable 5 on SWE-bench Pro at max effort. On Frontier-Bench it scores 43.3% (state-of-the-art), placing it clearly ahead of GPT-5.6 Sol. The catch is a new effort toggle: low/medium/high settings let you trade speed for depth. High effort uses more compute and hits rate limits faster, but you control the tradeoff.
Anthropic also offers a Fast Mode at $10/$50 per million tokens (2.5x speed for 2x price). This mirrors OpenAI's responsive tier, giving developers a premium option for latency-sensitive applications.
The strategic message is clear: Anthropic is making premium model quality the new mid-tier baseline. Opus 5 costs the same as Opus 4.8 but approaches Fable 5 performance. That puts pressure on OpenAI to justify GPT-5.6 Sol’s $5/$30 pricing against a model that nearly matches it for slightly less on output costs.