Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay
1.2K posts

Mark Christopher Lumbay
@the_markimooo
Software Engineer • Aviator • AI
Philippines Katılım Nisan 2026
108 Takip Edilen1 Takipçiler
Mark Christopher Lumbay retweetledi

We continue to respond to Russian strikes in a fully justified and accurate manner. Today, Ukraine’s long-range sanctions reached designated targets that support and finance Russia’s aggression. SSU units struck three oil depots in the Stavropol region at once, while units of our Armed Forces hit another fuel facility in the same region. Direct hits were recorded on three Russian shadow fleet tankers in the Black Sea. I thank every one of our units that is helping spread the realization in Russia that this war must end. Glory to Ukraine!
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Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay retweetledi
Mark Christopher Lumbay retweetledi
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i’ve been watching this on repeat since i woke up
zoé@luvbellinghm
just saw jude’s goal and he’s just SO GOOD?
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@kunchenguid I have the same experience! In addition, In terms of critical development work with complex concepts, 5.6 Sol was able to detect critical deficiencies and areas of concern around implementation, whereas K3 just said that it was already good to merge.
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ok just spent a morning with Kimi K3 as my firstmate, here's my real experience
1. it's very, very slow
potentially due to the fixed max reasoning. you should expect the experience of something slightly slower than fable
2. its claimed cost efficiency is not manifesting in real economics
i bought the $40 plan, and a few prompts later it's already eaten 1/3 of my 5-hr limit - it was in a single session and my context window was only 200k long at that time
i don't care what the benchmark numbers say, and what the face value API pricing is, in reality Kimi K3 burns my Kimi subscription as quickly as Fable burns my Anthropic plan - i observe no efficiency benefit
3. its instruction following capability is weaker than other frontier models
firstmate stretches frontier models' reasoning capability and is a really good test that can quickly reveal how good a model is at following instructions
the pure "intelligence" of K3 does hold up - it understands my intent very well, and can diagnose problems, delegate tasks all fine
but i very quickly noticed many instructions in firstmate's system prompt not strictly followed by Kimi K3. these were never a problem with gpt 5.5, 5.6, opus, fable and grok 4.5
so all in all, i'm now very skeptical of the claimed performance and going to keep my eyes wide open on its true capability
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Mark Christopher Lumbay retweetledi

@cline Can you also do one with GPT 5.6 Sol vs Kimi?
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We tested Kimi K3 and Fable on a real bug from the Cline repo, and found that while both models were able to fix it - Fable wins on speed & Kimi wins on cost.
- Kimi used 1.7x more tokens than Fable (1.2M vs. 730K)
- Fable finished 3.4x faster - 3.5 min and 18 tool calls vs. Kimi’s 12 min and 34 tool calls.
- Kimi cost 2.3x less ($0.92 vs. $2.13) thanks to its 3.3x per-token discount
Both runs used the same Cline harness, and the traces indicate that Kimi is RL trained to spend more tokens thinking and verifying before completing.
This is the first time we've seen an open weight model compete head to head with SOTA. Congratulations to the @Kimi_Moonshot team on this milestone!

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This is the most toxic relationship I’ve ever been in.
Claude@claudeai
Beginning July 20, Claude Fable 5 will be included in all Max and Team Premium plans, at 50% of limits. Pro and Team Standard users will continue to have access to Fable via usage credits, and will receive a one-time $100 credit. Demand for Fable has been challenging to predict, which is why we rolled it out to subscription plans in stages, extending access several times as we secured additional capacity.
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