Understand your context. Catch regressions.
Inspect what goes into your AI requests with Context X-Ray. Test behavior changes with DriftCheck. Track provider changes that affect your stack.
Context X-Ray is free with no signup. DriftCheck runs locally or in CI.
Context X-Ray
See what is eating your context window. Private, free, no signup.
Is your AI stack at risk?
Pick your providers, see critical changes in 10 seconds. Free, no signup, shareable.
Catch your first regression
Run a passing check, introduce a failure, and see DriftCheck block it. No API key needed.
Live River
Quick bytes on launches, deprecations, pricing moves, benchmarks, and breakage risk.
DriftCheck
GitHub-native evals that turn prompt and agent changes into PR scorecards.
Agent API Index
Compare auth, tool-calling support, pricing hints, docs quality, and integration gotchas.
Capital Radar
Funding rounds, acquisitions, and investor moves with builder-first context.
Top builder-critical changes
What could break your stack this week
- critical‘Never resist correction, shutdown': Microsoft unveils new draft code for its AI amid growing ‘control’ concernsOpenAI
- highApple repairs over 100 security vulnerabilities in iOS 27Mix Vale
- highiOS 27 is out now, here are 17 free iPhone updates that you probably missedGb News
- highCanadians can sign up for the government's free AI basics courseDaily Hive Victoria
- highAI Is Rewriting the Economics of Marketing Agencies — and the Fixed Retainer May Be Its First CasualtyEbnewsdaily
Sourced from the same live signal pipeline as River. Pin your evals with Checks.
Best places to start
Choose an artifact, not a browse path
The strongest A2ZAI surfaces now end in a public object you can use, share, or route teammates into.
Utility artifact
Run Checks and publish a benchmark card
Best for shipping teams who want a PR scorecard, public benchmark artifact, and shareable proof of improvement.
Open ChecksSignal artifact
Open the live river and jump into quick bytes
Best for scanning launches, deprecations, pricing shifts, and benchmark moves, then opening the strongest byte pages.
Open Live RiverDestination artifact
Use company pages as operating dashboards
Best for sending someone one link that combines official posts, live intel, quick bytes, and capital context.
Explore company pagesCompany Spotlight
NVIDIA
Perplexity Portable Computer Is Now Available on Windows, Powered by NVIDIA RTX
Meta
Reimagining Independence: How Meta’s AI Models Are Helping the University of Pittsburgh Transform Assistive Robotics
Watch astronaut Christina Koch and Google’s James Manyika discuss space, technology, and discovery.
Microsoft
How pharmaceutical leaders are operationalizing AI
OpenAI
From model to agent: Equipping the Responses API with a computer environment
Anthropic
Improving our alignment and security efforts
What changed for builders
Use this stream to spot the change, then move into a stronger destination page: river for the wider feed, company pages for operator context, and Checks for a public benchmark artifact.
DeepSeek-V4.1-Flash is trending on Hugging Face
Hugging Face • DeepSeek-V4.1-Flash
Edge0-35B-A3B-preview is trending on Hugging Face
Hugging Face • Edge0-35B-A3B-preview
MiniCPM5-2B is trending on Hugging Face
Hugging Face • MiniCPM5-2B
Nex-N2.5-mini is trending on Hugging Face
Hugging Face • Nex-N2.5-mini
xAI raised $6B (Series C)
Funding Radar • xAI
AI tool successfully predicts outcomes of immunotherapy in lung cancer
Medical Xpress • AI News
Databricks raised $10B (Series J)
Funding Radar • Databricks
Perplexity raised $500M (Series B)
Funding Radar • Perplexity
A2ZAI Checks
Catch prompt and agent regressions before merge, then turn the result into a shareable benchmark card.
Explore Checks5 Things in AI Today
A fast daily read on the biggest AI stories, tools, launches, demos, and deals.
5 Things in AI Today
The biggest AI stories, tools, launches, demos, and deals in a quick daily read.
Or stay in the loop
Funding Radar
View allxAI
$6BSeries C • Foundation Models
Databricks
$10BSeries J • AI Infrastructure
Perplexity
$500MSeries B • AI Applications
Physical Intelligence
$400MSeries A • Robotics
Chosen builder wedge
A2ZAI Checks is the utility layer on top of builder radar
The site stays useful as launch radar and discovery, but the product edge is a shareable scorecard builders can produce every time they ship. Supporting surfaces like learn still exist with 15 lessons and 126+ terms, but they are now secondary to shipping workflows.
Viral Artifact
GitHub PR scorecard
A2ZAI Checks
Prompt regression check for `support-agent.yaml`
Quality
+8.4%
Latency
+220ms
Cost
-31%
Passing: `refund-policy`, `invoice-lookup`, `cancel-subscription`
Regressed: `edge-case-promotions` on `gpt-4.1-mini`
Recommendation: merge after fixing one retrieval prompt and rerunning the pack.
Public Card
Benchmark card
Repo benchmark
support-agent / checkout-recovery
Best model route
Claude Sonnet + GPT-4.1-mini fallback
Win summary
12% better success at 29% lower cost
This is the artifact that spreads on X, GitHub, and founder launches: a benchmark card builders can link to when they ship.
AI Stock Pulse
Microsoft
Meta
Amazon
NVIDIA
Market data delayed. For informational purposes only.
Latest Research
View allCorrupt Plans, Clean Traces: Evading Chain-of-Thought Monitoring with Plan Injection
Chain-of-thought (CoT) monitoring is a safety strategy where the reasoning of a large language model "actor" is inspected by a "monitor" (often another language model) for signs of unsafe planning, deception, or misalignment. We find that planting harmful but benign-sounding reasoning in the actor's...
arXivBellman Policy Optimization
Reinforcement learning with verifiable rewards (RLVR) improves the reasoning capabilities of large language models (LLMs). We introduce Bellman Policy Optimization (BPO), a critic-free method derived from Policy Mirror Descent (PMD). For autoregressive generation with terminal rewards, BPO uses the ...