Fresh AI news
Anthropic releases Claude Opus 5.5 with Fable-level work at lower costAnthropic, OpenEvidence partner to bring medical AI to ~100 countriesOpenAI launches GPT-6 Sol and Luna at 50% lower API pricesAlphabet Intrinsic open-sources Intrinsic Core robotics platform at ROSConNVIDIA Isaac ROS 5.0 adds AI agent skills and ROS 2 Lyrical supportOpenAI publishes priorities and principles for third-party AI assessmentsUK parliament summons OpenAI, Anthropic, DeepMind, Meta on AI safetyOpenAI urges U.S. lead on global frontier AI technical standardsOpenAI, Anthropic near deal to stress-test each other's AI modelsSoftBank launches ~$11B bonds to fund OpenAI investment trancheMicrosoft's Mustafa Suleyman: China isn't an excuse to skip AI guardrailsNvidia's Jensen Huang emerges as Trump's top ally in the AI safety debateLawsuit: Anthropic, OpenAI, SpaceXAI, Google illegally agreed to slow AIAnthropic weighs new model launch ahead of IPO as Astra gains enterprise shareAnthropic releases Claude Opus 5.5 with Fable-level work at lower costAnthropic, OpenEvidence partner to bring medical AI to ~100 countriesOpenAI launches GPT-6 Sol and Luna at 50% lower API pricesAlphabet Intrinsic open-sources Intrinsic Core robotics platform at ROSConNVIDIA Isaac ROS 5.0 adds AI agent skills and ROS 2 Lyrical supportOpenAI publishes priorities and principles for third-party AI assessmentsUK parliament summons OpenAI, Anthropic, DeepMind, Meta on AI safetyOpenAI urges U.S. lead on global frontier AI technical standardsOpenAI, Anthropic near deal to stress-test each other's AI modelsSoftBank launches ~$11B bonds to fund OpenAI investment trancheMicrosoft's Mustafa Suleyman: China isn't an excuse to skip AI guardrailsNvidia's Jensen Huang emerges as Trump's top ally in the AI safety debateLawsuit: Anthropic, OpenAI, SpaceXAI, Google illegally agreed to slow AIAnthropic weighs new model launch ahead of IPO as Astra gains enterprise share
DonvitoCodes

AI engineering, from Singapore

Building AI agents,
local models, and
AI workflows.

I build AI agents, train and deploy local models, implement AI workflows, and advise your leadership team on a per-need basis.

Start a projectBook a call
Melvin Vivas, AI engineer and Fractional CAIO
25+
years shipping software
1.5k+
GitHub stars on the Codex orchestrator
300+
people trained in workshops and mentoring

What I build

Things I've shipped

All projects

Open source · 1.5k+ stars

Codex Astra/Luna Orchestrator

Astra as the orchestrator, Luna for subagents, inside Codex.

Desktop app · v0.5.1

Coworker

Personal and work AI agents for non-technical people. Local and cloud models.

Open source · TypeScript

Local Evals

Eval app that runs locally against local models or any OpenAI-compatible API.

Open source · TypeScript

Agent Monitor

Visualize Codex and Claude Code subagents: traces, token breakdown, and cost.

Production SaaS

AI Dream Photo

GenAI photo generation and face cloning, used by paying customers.

Open source

AI Backends

API server runtime for common AI use cases. Ollama and LM Studio locally, or cloud providers.

Installer · Docker

GAIA

Runs multiple private Hermes agents on one machine.

Marketplace

Skillsbento

Agent skills for Claude Code: analytics, research, finance, growth.

Open source · Go

Cursor Go SDK

Typed SDK for the Cursor Cloud Agents API with streaming and artifacts.

github.com/donvito

How a project runs

Scoped projects or a retainer. Remote-first from Singapore, with in-person sessions available locally.

Explore engineering servicesBook a call
  1. 01

    Scope

    A short call on the problem, your data, and what done looks like.

  2. 02

    Propose

    Deliverables, timeline, and the engagement: fixed project or retainer.

  3. 03

    Build & ship

    Working software early, regular demos, production at the end.

Melvin Vivas speaking on stage

Melvin Vivas

AI Engineer & Fractional CAIO · Singapore

Senior engineering roles at Standard Chartered Bank and Ohmyhome (Nasdaq), then a run of AI products built and shipped end to end. I explain AI in plain language and still write the code.

  • 25 years across banking, fintech, and enterprise
  • Speaker at NTU Singapore, PSIA, and DICT Philippines
  • 300+ trained through workshops and mentoring
  • Open-source maintainer: Codex orchestrator, AI Backends, Local Evals
Connect on LinkedIn

Invited to speak by

Nanyang Technological University, Singapore
Philippine Software Industry Association (PSIA)
Department of Information and Communications Technology (DICT), Philippines
Bureau of Fisheries, Department of Agriculture, Philippines

Other ways to work with me

Fractional CAIO

Executive AI strategy on a per-need basis.

Managed AI Coworker

An AI coworker for your business, built and maintained.

Personal AI Agent Setup

Hermes on your own computer. Your data stays yours.

AI Workshops

Hands-on team training, practical from hour one.

Latest AI news

All AI news

Models ·

OpenAI launches GPT-6 Sol and Luna at 50% lower API prices

OpenAI announced (Sept 22) GPT-6 Sol and GPT-6 Luna, expanding the GPT-6 family after Astra with models trained using similar methods and carrying Astra’s advances in professional work, factuality, coding, computer use, and alignment into faster, cheaper tiers: Sol for complex coding and agentic workflows, Luna for focused high-volume tasks. Caching and inference gains cut API prices 50% vs GPT-5.6 promotional pricing—Sol $2/$10 and Luna $0.10/$0.50 per million input/output tokens—while internal factuality evals say Sol makes about half as many mistakes as its predecessor, approaching Astra-level reliability at lower cost. Both ship in ChatGPT Work and Codex for Plus/Pro/Business/Enterprise/Edu and in the API as `gpt-6-sol` / `gpt-6-luna`; Free and Go users get Luna in the desktop app, with ChatGPT Chat rollout gradual. Distinct from GPT-6 Astra’s Sept flagship launch and from Anthropic’s same-day Opus 5.5 release.

Source: OpenAI

Models ·

Anthropic releases Claude Opus 5.5 with Fable-level work at lower cost

Anthropic announced (Sept 22) Claude Opus 5.5, the first Claude 5.5-family model, saying it performs at Claude Fable 5.1 level on most work while costing ~40% less to run than Opus 5—API pricing $4/$20 per million input/output tokens (20% below Opus 5) and cache reads $0.20/MTok (60% below), with >30% faster output. It is Anthropic’s first release since Amodei’s “pace the frontier” call; external evaluators including Frontier Design and METR tested it pre-release, and Anthropic says it leads its automated behavioral audit while shipping Mythos/Fable-class biology and cybersecurity safeguards (Life Sciences Verification Program open; Cyber Verification Program expanding). Sonnet 5.5 and Haiku 5.5 follow in coming weeks; `claude-opus-5-5` is live on Claude, AWS, Google Cloud, and Azure. Distinct from the Reuters Anthropic-new-model-ahead-of-IPO exclusive, from Fable 5.1, and from OpenAI’s same-day GPT-6 Sol/Luna launch.

Source: Anthropic

Enterprise ·

Anthropic, OpenEvidence partner to bring medical AI to ~100 countries

Reuters reported (Sept 22) that Anthropic and medical knowledge platform OpenEvidence are collaborating to deliver free AI-powered clinical decision support to physicians in about 100 low- and middle-income countries—including Uganda, Angola, Sudan, Haiti, and Mongolia—where limited journal access, specialist expertise, and CME can impair care. OpenEvidence already answers clinician questions from peer-reviewed research and guidelines free in the U.S. and Europe (42 million U.S. consultations in August alone, per founder Daniel Nadler); Anthropic supplies backend tech while OpenEvidence adapts for local infrastructure and disease patterns, building on Rwanda/Botswana adaptation work. Financial terms were undisclosed; Anthropic president Daniela Amodei framed the effort as philanthropically minded access the market alone would not fund. Distinct from Anthropic’s Bay Area wet lab / LSVP biology push and from OpenEvidence’s earlier Penn Medicine partnership.

Source: Reuters

Updated September 22, 2026

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AI agents, local models, or AI workflows. Bring the problem, I'll scope it, build it, and ship it.

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