The volatility highlights low switching friction for AI APIs
Usage share of OpenAI grew vs Anthropic yesterday despite Mythos 5 / Fable 5 launch Multiple power users at SemiAnalysis tried Mythos / Fable Got refusals for nonsensical reasons Got pissed off at Anthropic Gave Codex a legitimate try Now they actually prefer it to 4.8 Opus
Many users are switching to OpenAI Codex over Anthropic Opus because refusals disrupt workflows and feel off-putting, while a few simply call Codex more reliable for daily use.
@dylan522p No love for Gemini?
@VijarKohli Nah the model is materially worse still outside multi-modality
@dylan522p Cannot believe it took you guys so long to realize GPT-5.5 in codex is a better experience than Opus 4.8
@dylan522p Codex is significantly better than CC
@dylan522p @zephyr_z9 Wait the split is this bad? Codex has been better for a while
@dylan522p @zephyr_z9 Bro just @ Dario at this point lmfao
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Usage share of OpenAI grew vs Anthropic yesterday despite Mythos 5 / Fable 5 launch Multiple power users at SemiAnalysis tried Mythos / Fable Got refusals for nonsensical reasons Got pissed off at Anthropic Gave Codex a legitimate try Now they actually prefer it to 4.8 Opus
@dylan522p we know who is most annoyed
@dylan522p 4.8 is kind of weird. 4.7 is better. 4.8 has been a complainer for me.
@dylan522p @zephyr_z9 • OpenAI deserves credit • Gemini should get recovery therapy • Anthropic needs to stop being misanthropic
@dylan522p This is what happens when refusals break workflows
frustration compounds and people actually try the alternative
@dylan522p Fable is objectively the best model, but GPT-5.5 is my fav as a daily driver. Opus and Sonnet aren't worth the cost. I'm very excited for the OpenAI release that is coming soon.
@dylan522p Anthropic still just dominates. I know gpt 5.5 is good. But my finance agent still uses opus 4.7... Why? I spent most of my time tuned the harness to fit Opus... But for long term, I will have to spend more time to tune GPT harness.
@dylan522p @zephyr_z9 I think I see a one pixel wide blue line at the top
@GergelyOrosz are you very sure you will be honest
@dylan522p Surprising to see no chinese cheap models? thought most of the commodity tasks were done by cheap models.
@dylan522p mandate can be lost faster than they think
@dylan522p @conorsen Hey where’s the blue line
@dylan522p Curious are these coding related tasks or what's the major use, some agent like Hermes/openclaw?
@dylan522p Can understand why! Just got this in response to a prompt to review the codebase and suggest improvements... Pfft.
The volatility highlights low switching friction for AI APIs
Usage share of OpenAI grew vs Anthropic yesterday despite Mythos 5 / Fable 5 launch Multiple power users at SemiAnalysis tried Mythos / Fable Got refusals for nonsensical reasons Got pissed off at Anthropic Gave Codex a legitimate try Now they actually prefer it to 4.8 Opus