SShortSingh.
TopTechnologyAI & MLStartupsProgrammingScienceBusinessFinanceCrypto & Web3World
Back to feed
Programming

Claude Opus 5 Matches Opus 4.8 Pricing While Nearly Closing Gap With Fable 5

0
·1 views

Anthropic released Claude Opus 5 on July 24, priced at $5 and $25 per million input and output tokens — identical to Opus 4.8 and half the cost of Fable 5. Despite the lower price, Opus 5 trails Fable 5 by only 1.1 points on SWE-bench Pro coding benchmarks, compared to an 11-point gap last month, effectively challenging Fable 5's dominance for demanding tasks. Developers migrating from Opus 4.8 face breaking changes, as extended thinking is now enabled by default, which can silently truncate responses when max_tokens is set too tightly. Additionally, disabling thinking while using xhigh or max effort levels now returns a 400 error, requiring an audit of all call sites before migration. Other notable changes include a lower prompt-caching threshold of 512 tokens and a separate rate-limit pool for Opus 5, meaning traffic shifts from older models will not free up or inherit existing headroom.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Log in to join the discussion and vote.

Log in

Related stories

0
ProgrammingDEV Community ·

Developer Shares Python and Perl Solutions for Weekly Coding Challenge 383

Mohammad S. Anwar's Weekly Challenge 383 tasked participants with two coding problems: determining if two word lists are similar using a mapping list, and rounding hex color values to the nearest web-safe color. A developer published solutions in both Python and Perl, without the use of AI tools like Copilot. The 'similar lists' solution builds a mapping dictionary from a third list and compares transformed versions of the first two lists. The hex color task involves rounding each RGB channel to the nearest web-safe value from a fixed set of six options. The author notes that edge cases, such as directional mappings and multi-word groupings, were inferred from the provided examples rather than the task description itself.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Skull Skills: Free Open-Source AI Team Framework for Claude Code Users

Skull Skills is a free, open-source framework that turns Claude Code into a coordinated AI team by dropping markdown files into a local .claude/ directory. Users trigger the system by saying 'skull,' prompting a leader agent to interview them, map their project, and assemble a tailored team of specialists including a project cartographer called Sentinel. The tool requires no account, API key, or external vault, as all data remains local and in plain text. By default, the system is inert and runs nothing autonomously — every action requires user confirmation through Claude Code's standard permission prompts. Optional opt-in guardrail hooks can be enabled to hard-block high-risk actions, such as weakening tests or running irreversible shell commands on production systems.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Self-taught developer reflects on values, remote work interest, and learning without a degree

A self-described student and self-taught developer on DEV Community wrote a reflective post after receiving a comment inquiring about remote work opportunities. The author, who holds no university degree, traces their programming journey back to the public launch of OpenAI, citing AI, Python, and Linux among their areas of self-study. They were transparent about their formal credentials being limited to basic vocational training, private security certification, and a handful of online courses. The post centered on the author's professional values — adaptability, honesty, and results over paperwork — while stopping short of making any commitments to the anonymous commenter. They concluded by inviting the other party to identify themselves and their intentions before any further conversation could progress.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Developer releases local npm tool to catch PHI leaks in LLM outputs during CI builds

A developer building LLM features on clinical text has released phi-leak-guard, an open-source TypeScript npm package designed to fail test suites when AI model outputs contain protected health information. The tool runs entirely locally within Vitest or Jest, meaning no patient data is sent to external APIs or third-party services. Unlike simple regex matching, it validates detected patterns using checksums and structural rules — such as Modulus-11 for NHS numbers — to reduce false positives. When a violation is found, the library reports exactly which identifier type was detected and how confidently it was matched. Released under the MIT license, the package targets HIPAA Safe Harbor identifiers and common UK GDPR direct identifiers, and is positioned as a regression gate rather than a compliance certification.

0 comments Read more at DEV Community
Claude Opus 5 Matches Opus 4.8 Pricing While Nearly Closing Gap With Fable 5 · ShortSingh