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Joined July 2026
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YOU CAN MASTER SONNET 5.5 IN 30 MINUTES A DAY.
Here's the whole plan:
Week 1: Foundations. Your context file, the 5 part brief, prompts you can reuse.
Week 2: Build. Claude Code, your first tool, tests, computer use.
Week 3: Agents. API calls, prompt caching, tools, human checkpoints.
Week 4: Ship. One real project, measured before and after, in someone else's hands.
30 days. One task a day. Every prompt is in the article.
Save this and start tomorrow.
follow @cyrilXBT
the sonnet 5.5 launch numbers nobody's talking about
→ box: work done 2.4x faster with 12% fewer tokens
→ balyasny: 121k tokens per answer, down from 497k on sonnet 5
→ base44: 3.6 build attempts per app vs 7.7 on opus 5
→ zendesk: support tickets processed 20% faster
the win isn't just the price per token. it needs fewer tokens and fewer retries to finish the same job
i wrote the 30 day roadmap to put it to work. link below
follow @cyrilXBT
Day 1 of mastering Sonnet 5.5 takes 30 minutes.
Write this once and every answer gets better:
What I do:
Who I do it for:
Tools I use every day:
What good work looks like:
How I like answers:
Things I never want:
Current projects:
Paste it into a Claude Project. Done.
That's day 1 of 30. The other 29 are in the article below.
follow @cyrilXBT
There's a seven point case for BNB Chain going around this week. Worth looking at what's underneath the numbers.
Activity first. BSC did about $677M in DEX volume in the last 24 hours when I checked DefiLlama this morning, after a slower week; the 30 day total sits at $32.4B, roughly $1B a day. BNB Chain's last quarterly report put daily active users around 4.5M.
Then what changed underneath. BSC has produced blocks every 0.45 seconds since the Fermi hard fork on January 14, with finality around one second. Four hard forks took it from 3 seconds to 0.45 without downtime. Including a transaction and finalizing it are separate steps, and both got faster.
The asset base is expanding. Ondo tokenized stocks and ETFs are live natively on BNB Chain, and Grayscale counts BSC among the three chains taking most tokenized stock volume.
And supply. The Q1 2026 quarterly burn removed over 1.57 million BNB, part of the Auto Burn system targeting a total supply of 100 million.
Activity, settlement, assets and supply. Each tells a different part of the story.
Two cautions. Active addresses are not individual people. And a good quarter is not a trend. But the combination gives something concrete to examine beyond price.
What interests me about BNB is how much of the case can already be checked against a working network, recorded transactions and accessible markets. That deserves a closer look.
Some product decisions only make sense when you look beyond this quarter.
In his interview with Bonnie Blockchain, Felix Fan described his investor this way: "My investor never asked for more return. He always asked me to earn less." His example was removing Trust Wallet fee on eligible stablecoin swaps, "giving up millions in profit just by making that decision."
That gives me a lens for the Trust Wallet updates I've been covering.
Removing the wallet fee from eligible swaps makes those conversions cheaper. A warning before confirmation helps someone catch a mistake. Remembering a setting saves them from repeating a step.
Different decisions, one shared benefit: the product gets easier to keep using.
He also described what holds it together: Trust Wallet stays chain-agnostic and supports the best builders regardless of background. He illustrated that approach with the Hyperliquid integration; he expected pushback and got "why not?"
As someone building a product myself, I find that worth paying attention to. Revenue matters. So does what gives people a reason to come back.
Built for the long run.
This is probably the interview where I’ve shared my story and thought process most extensively so far.
Happy to be on the show. Full episode on YouTube! @TheBonnieChang
$TAO has to be the only crypto project with real motion rn
SOMA cut a prompt’s token count by 76% live, reducing the text you pay AI models to process.
On the latest Novelty Search, Subnet 114 presents its compression tool for coding agents, already in early access for Copilot and Codex.
The team reports ~15% lower inference costs on average across coding tasks. @say_gm_ has integrated SOMA’s open-source compressor, and Dendrite uses it in daily development.
Hosted by @const_reborn
Full episode in the first comment
Your AI agent is paying 20x TOO MUCH to reread the same instructions.
Every call, it sends your system prompt, your tool list and your project notes again.
On Opus 5.5, fresh input costs $4 per million tokens.
Cached input costs $0.20.
Same tokens. 20x cheaper.
The fix takes 5 minutes:
Put everything that never changes at the TOP of your prompt.
Mark it with cache_control.
Put the part that changes every call at the BOTTOM.
That's it. Your next bill will show the difference.
Bookmark this before you forget.
follow @cyrilXBT
Sonnet 5.5 is actually INSANE and FAST!!
Three objects on a table.
A sneaker, a phone and a brick.
Real or cake?
Guess before the knife comes down.
Then look at the table.
A $200 CLAUDE CODE PLAN CAN BURN THROUGH ABOUT $9,000 OF OPUS 5.5 A MONTH.
One developer maxed out 3 accounts since Opus 5.5 launched and priced the usage at API rates:
$2,086
$2,442
$2,182
That's about $2,200 of Opus per account, per week.
Times 4.3 weeks, that's roughly $9,500 a month in API value, for $200.
Subscriptions are the most underpriced thing in AI right now.
follow @cyrilXBT
OPUS 5.5 + JEV IS THE BEST TRADING AGENT STACK I'VE SEEN.
Not because it predicts the market. Nothing does that reliably.
Because it splits the job correctly:
Step 1: Opus 5.5 does the research. Filings, earnings calls, news, strategy code.
Step 2: Your strategy generates a trade signal.
Step 3: Jev scores every entry before it goes out: signal agreement, market regime, risk already on the book.
Step 4: Anything below your confidence threshold never reaches the exchange.
Step 5: Every decision gets logged with the reason, so you can see exactly why a trade was taken or killed.
Research like an analyst. Risk checks in milliseconds.
The whole system, codebase included, is in the article below.
follow @cyrilXBT
Your AI agent is paying 20x TOO MUCH to reread the same instructions.
Every call, it sends your system prompt, your tool list and your project notes again.
On Opus 5.5, fresh input costs $4 per million tokens.
Cached input costs $0.20.
Same tokens. 20x cheaper.
The fix takes 5 minutes:
Put everything that never changes at the TOP of your prompt.
Mark it with cache_control.
Put the part that changes every call at the BOTTOM.
That's it. Your next bill will show the difference.
Bookmark this before you forget.
follow @cyrilXBT
In 14 minutes, this Anthropic engineer who wrote "Building Effective Agents" will
will teach you more about building them properly than most developers ever uncover by themselves
even after months.
save this for the weekend, then dive into the builder’s guide below.
This video is larger than Cloudflare's 512 MB cache, so it can't be played through. More donations are needed to cover a larger cache. Donate
I asked an sonnet 5.5 to simulate ice cubes in a drink
drop them in
watch them crack
then watch 20 minutes happen in 12 seconds
the last frame is the most honest thing i've seen all week
It's over for OPENAI
Most AI agents don't fail at the task.
They fail the user.
A plan you never saw.
A silent spinner for 3 minutes.
A file changed without asking.
An action you can't take back.
Here's how to master agent UX with Opus 5.5.
5 moments to design on purpose:
1. Clarify. Vague goal? Ask one sharp question before doing anything.
2. Preview. Show the plan before a single tool runs.
3. Gate. Deleting, sending, paying, publishing? Wait for a yes.
4. Stream. One status line per step. Never a silent spinner.
5. Undo. Every action gets a way back.
The model is rarely the problem.
The experience around it is.
Bookmark this before you ship your next agent.
Follow @cyrilXBT for more agent builds.
Zero fees needs one more question: which fee, on which transaction?
BNB Chain 0 Fee Carnival has a published end date of September 30, 23:59 UTC. It has been extended several times since last year, so it may be again, but these are the terms today. If you move stablecoins, here's what the wallet transfer part covers.
For eligible direct transfers on BNB Smart Chain through participating wallets:
• USDC: two free transfers per day.
• USD1 and U: unlimited free transfers.
• Minimum transfer: $0.10.
Trust Wallet is among the supported wallets.
The campaign also includes selected exchange withdrawals and USDC bridging routes, with separate conditions for each provider.
In its September 1 update, BNB Chain reported that over $4.5M in gas fees had already been covered for users.
A covered transfer fee is different from a waived swap fee. This does not make every transaction on BNB Chain free. Check the asset, network and displayed fee before confirming.
What interests me is the everyday use case: paying someone or moving stablecoins between your own wallets with one less cost to account for.