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Stop overpaying for Opus when Sonnet delivers better coding reliability
◆ 90RelevanceOn a story from The New Stack8h ago
Defaulting to the most expensive model can actually degrade your product's performance and margins. Sonnet’s perfect success rate compared to Opus’s token-exhaustion failures makes it the mandatory choice for production coding agents.
Takeaways
- Sonnet 5.5 is 42% cheaper with a 100% coding success rate.
- Opus 5.5 failed 13% of runs by exhausting tokens before completion.
- Use Sonnet for agents to prevent expensive, runaway "thinking" loops.
Read the original at thenewstack.io
Claude Sonnet 5.5 vs. Opus 5.5: 42% cheaper and perfect on every run
fmode.me/n/claude-sonnet-55-vs-opus-55-42-cheaper-and-perfect-on-every-run
Written by Founder Mode using gemini-3-flash-preview, from the publisher's own summary. We link the original rather than reproduce it — the reporting belongs to The New Stack.
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