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Ox Alpha

▲ 12 points 23 comments by vismit2000 2w ago HN discussion ↗

Pangram verdict · v3.3

We believe that this text is a mix of AI and human-written content.

69 %

AI likelihood · overall

Mixed
30% human-written 70% AI-generated
SEGMENTS · HUMAN 2 of 5
SEGMENTS · AI 2 of 5
WORD COUNT 1,071
PEAK AI % 94% · §5
Analyzed
Aug 25
backend: pangram/v3.3
Segments scanned
5 windows
avg 214 words each
Distribution
30 / 70%
human / AI fraction
Verdict
Mixed
Pangram v3.3

Article text · 1,071 words · 5 segments analyzed

Human AI-generated
§1 Mixed · 67%

Now in stealth · free to try Meet Ox Alpha. The reasoning model that appeared out of nowhere. Built for code, long-horizon agents, and a million tokens of context. Nobody knows who made it — everyone wants to try it. No sign-up. No subscription.

§2 Human · 27%

Chats aren't stored on our servers. 1Mtokens of context 131Kmax output tokens 3input modalitiestext · image · video $0while it's in stealth Reasoning Thinks beforeit speaks.

§3 AI · 90%

Ox Alpha is a reasoning-first model. It plans, checks itself, and only then answers — so hard problems get worked through instead of guessed at. Multi-step logicMath, systems design, proofs, tricky edge cases — worked through, not pattern-matched. Visible thinkingWatch the reasoning stream in before the final answer lands. Production-grade outputTuned for real workloads, not party tricks. 1,048,576 A million tokens of memory. Paste an entire codebase, a 500-page spec, or a week of transcripts. Ox Alpha keeps all of it in mind while it works — no chunking, no retrieval tricks, no losing the thread. Capabilities Built for real work. Everything a frontier model should do — and a few things most of them can't. Long-horizon coding Designed for sustained software engineering: debugging, refactoring, and reasoning across large codebases without losing context. Sees what you seeText, images, and video in. Screenshots, diagrams, and UI — reasoned about, not just described. Tool calling Native tools and tool_choice support for agents that actually do things. Structured output Ask for JSON and get JSON — schema-shaped responses via response_format. Sustained agentic work Keeps its footing across long, multi-step tasks instead of drifting off halfway. In action Watch it reason. A reasoning model shows its work. Here's what a typical exchange looks like. oxalpha.com/chat Why does this Python function sometimes return stale data?cache = {}; def get(k): return cache.get(k) or fetch(k) Ox Alpha ThinkingTwo issues: or treats falsy cached values (0, "", []) as misses and re-fetches; and nothing ever writes to cache, so the "stale" data must come from fetch itself — likely a module-level connection reused across requests. Check both. The bug is in the or: any falsy cached value is treated as a miss. Also, cache is never populated. Use an explicit membership check and store results: def get(k): if k not in cache: # explicit miss check cache[k] = fetch(k) # actually populate return cache[k] If results still look stale, the culprit is fetch reusing a connection with read-consistency lag — want me to look at it? Benchmarks Stealth model. Top of the table. On an independent run of 10 real-world coding tasks, Ox Alpha solved 8 — ahead of every frontier model it was lined up against.

§4 Human · 16%

80%Ox Alpha8 of 10 tasks solved 65%Fable 5fable-5 [max] 62%GLM-5glm-5.3 [max] 52%GPT-5gpt-5.6-sol [max] 62%Grok 4grok-4.6 [xhigh] Task fable-5 [max]glm-5.3 [max]gpt-5.6-sol [max]grok-4.6 [xhigh] ox-alpha anko-typed-variable-bindings 4/44/42/41/4 ✓ arktype-json-schema-refs 2/41/43/41/4 ✓ fastapi-deprecation-headers 4/43/43/44/4 ✓ helm-unified-manifest-stream 4/44/44/44/4 ✓ igel-persist-feature-schema 3/43/40/44/4 ✓ katex-multicolumn-array-spans 2/44/43/44/4 ✓ meriyah-explicit-resource-decl 1/40/40/40/4 ✓ query-persist-restored-state 2/43/41/42/4 ✓ scc-bounded-memory-spilling 4/43/44/44/4 ✕ vulture-persistent-analysis-cache 0/40/41/41/4 ✕ Mean on these 10 65%62%52%62% 80% Independent community benchmark — 10 real-world coding tasks. Reference models: passes out of 4 attempts per task. Ox Alpha: pass/fail. Highlighted row: the task every reference model scored 1/4 or worse on — Ox Alpha solved it. Third-party data, small sample — directional, not definitive. Full breakdown & methodology Ox Alpha vs Fable 5 Ox Alpha vs GLM-5 Ox Alpha vs GPT-5 Ox Alpha vs Grok 4 Try it on Pick a task. Or bring your own. How it works Zero to answer in seconds. Get started in seconds — no account needed. 01Describe the taskType a goal in plain English. Paste the whole file, log, or document — context is not a problem. 02Ox Alpha reasonsIt thinks through the problem step by step, then streams back its answer in real time. 03Review & iterateRefine with follow-ups. The whole conversation stays in its 1M-token memory. FAQ Questions, answered. What is Ox Alpha? Ox Alpha is a stealth AI model that appeared in August 2026.

§5 AI · 94%

It's a reasoning model designed for coding, sustained agentic work, and production workloads — and nobody knows for sure which lab made it. What is oxalpha.com? oxalpha.com is an independent site that gives you a free, no-login chat interface to the Ox Alpha model. We are not the model's creators — we're fans of it, like everyone else trying to guess who built it. Is Ox Alpha really free? Yes. While the model is in its stealth period, chatting here is completely free — no hidden fees, no credit card, no account. Who made Ox Alpha? That's the fun part — nobody knows. Stealth models are published anonymously so labs can gather real-world feedback before an official launch. The internet is full of theories; try it yourself and form your own. What is Ox Alpha good at? It shines at long-horizon software engineering, complex reasoning, and workflows that combine text with visual context. It has a 1M-token context window and supports tool calling and structured output. Is my conversation data private? oxalpha.com doesn't require personal information and doesn't store your conversations on our servers. Messages are processed by the upstream model API to generate responses. As with any AI service, avoid sharing sensitive data. Can I use Ox Alpha on mobile devices? Yes. oxalpha.com works in any modern browser — on phones, tablets, and desktops alike. Still curious? Get in touch. What is Ox Alpha oxalpha.com is a fast, free way to chat with Ox Alpha — the stealth reasoning model that appeared in August 2026 — right from your browser. No account needed, no subscriptions, no barriers. Ox Alpha is built for serious work: long-horizon software engineering, complex multi-step reasoning, and tasks that mix text with visual context. With a 1,048,576-token context window, it can hold entire codebases, papers, or transcripts in mind while it works. The interface is clean and simple. Type a question or prompt, and Ox Alpha reasons through it and responds in real time. Keep asking follow-ups, start new topics, or stress-test it — that's exactly what a stealth period is for. oxalpha.com is an independent project and is not affiliated with the (unknown) lab behind the model. No personal information is required, and we don't store your conversations on our servers. Try it before the internet figures out what it is. Free while Ox Alpha stays in stealth. No account, no card, no waitlist. Open chatWorks on all devices — mobile, tablet, desktop