Spent some time poking at free tiers across a few tools. Here's what actually held up and where the catches are. **Claude (Sonnet 4.6 on free tier)** Still the one I reach for when I want writing that doesn't read like a press release, or code that actually compiles. I trust it more for anything where being quietly wrong is worse than being loudly wrong. The catch: free tier is stingy. You hit limits fast on busy days, need a phone number to sign up, and there's no warning before it cuts you off. There's a browser extension that tracks usage so you can see the wall coming. My approach: use it for the hard 20% of the day, let a free model handle the rest. **MiniMax Agent** A free swing at what Devin and Manus charge for, give it a prompt and it writes, runs, and debugs the code itself. Replaces the copy-paste loop between ChatGPT and your editor for longer multi-step jobs. Catch: it burns credits fast, and complex tasks still go off the rails without warning. It's confidently wrong in ways that can cost you more time than just doing it yourself. Worth a few free runs to see if it actually finishes a task, but I wouldn't cancel anything for it yet. **K2Think** A 32B reasoning model from MBZUAI and LLM360, positioned as a free alternative to o1 / DeepSeek R1 for step-by-step reasoning, math, and logic. Note: this is NOT Kimi from Moonshot despite the name confusion. Honesty flag, the benchmark claims got real pushback, there's an HN thread literally titled "Debunking the Claims of K2-Think," so take the leaderboard numbers with salt. Still, a fully open 32B reasoning model is nice to have around. Try it on something gnarly and see if the reasoning holds. **Indic LLM Arena** A side-by-side chat playground from AI4Bharat (includes Gemini 3.5 Flash), built for benchmarking Indian languages. Usage is unlimited, which I double-checked because that's rare. No save history, and it's clearly tuned for Indic languages. If you write in Hindi, Tamil, or Bengali, easiest free way

From English prompt to deployed ML model with human approval Discussion | Link

NSO Group is still targeting WhatsApp users, according to Meta.

Results from a randomized controlled trial show the potential of Gemini’s Guided Learning feature to boost engagement and accelerate learning.

We tried to speed up random trace_id lookups with a bloom filter and found it sped some queries up 29× while making others slower, and which one you get depends entirely on how your IDs are generated. TL;DR: Looking up a random trace_id across 170 index files in object storage took 2,584ms. Tantivy prunes files by min/max term, but a random 16-byte ID is scattered across the whole 128-bit space, so every file's range is [0, 2¹²⁸], nothing prunes, and all 170 files get opened. On object storage every one of those is a network round trip, and that's where the 2.6s goes. A bloom filter is the obvious fix. The non-obvious part is where you put it. Per-file blooms = 170 small reads, which object storage punishes hardest, so it barely beats doing nothing. The trick: every file's bloom uses the same block count, so a query value maps to the same block index in every file. Store blooms block-major instead of file-major, and "block 7 across all 170 files" becomes one contiguous 5,440-byte row. One range request, 170 checks, ~170× fewer round trips. Lookup dropped to 89ms. But this makes time-ordered IDs slower. A UUIDv7 already range-prunes for free in 154ms; the bloom layer adds ~42ms and Tantivy still does its 154ms on the survivor, netting ~196ms of pure overhead. UUIDv4 wins by 29×, UUIDv7 loses by 1.3×. So we don't auto-detect fields to bloom (sampling would guess wrong half the time). Operators opt in per field, only when all three hold: high cardinality, random distribution, many files per hour. One design choice I'd defend: every bloom failure mode degrades to "keep the file." It can be slow; it can never drop a row. We wrote up the full thing with diagrams and the SBBF details on our blog , happy to take questions here. Disclaimer: I am one of the maintainers at OpenObserve (open-source observability, written in Rust) and the writer is our founding engineer. This is our own benchmark, single querier, S3 backend, no disk cache. Happy to share the test setup so anyone

AI screen-sharing calls for user onboarding Discussion | Link

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