Claude Opus 5 pricing and launch-day cost-per-task result
9 hours ago
- Anthropic released Claude Opus 5 on July 24, 2026, at the same standard token price as Opus 4.8, offering a direct value upgrade.
- Opus 5 is now the default model on Claude Max and available on Claude Pro, with API model ID claude-opus-5.
- Anthropic claims Opus 5 more than doubled Opus 4.8's performance on Frontier-Bench v0.1 and came within 0.5% of Fable 5's peak score on CursorBench 3.2 at roughly half the cost.
- Pricing stays flat per token, but task efficiency gains (fewer turns, tool calls, or retries) may lower real costs; early tests showed 26% fewer generated tokens on one legal workflow.
- Fast mode costs 2x the base Opus 5 rate and is best for latency-sensitive tasks, not background work.
- AI Pricing Guru's Labs test showed Opus 5 achieving 49/49 accuracy but with higher verbosity (1,989 vs 630 tokens) than Opus 4.8, warning teams to test output-token behavior.
- Existing Opus 4.8 API users benefit most; Fable 5 becomes harder to justify as a blanket premium route, while high-volume teams should keep Sonnet 5 for routine traffic.
- Developers should evaluate Opus 5 in their own suites, track cost per accepted result, maintain fallback routes, and revalidate safety-sensitive workflows before migration.