Unicorn Whisperer | SA @fireworksAI_HQ | Author of “Birth of a Unicorn: Six Basic Steps to Success" | she/her/hers 🖤🏳️‍🌈

Las Vegas, NV
Heather Wilde retweeted
Our team spends a lot of time making sure very tight numerics before enabling the model for training. This means you can train with confidence that the infra won’t silently fail or corrupt your rl runs. We also consistently test against open source frameworks and take a lot of pride in providing the best numerics aligned infra for training you could get. This matters specially for large rl runs or large moe model
Rollouts drive most of RL's compute cost. But splitting rollout and training across engines risks numerical mismatches, and in MoE models, that can even send tokens to different experts. We co-build both engines at Fireworks, so training stays fast and consistent. Learn more: bit.ly/4ALjga5
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Heather Wilde retweeted
With the increasing adoption of task-specific model routers, we will see many more verticalised, Jev-like classification and regression models, each trained to outperform their general-purpose counterparts on specific tasks.
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Heather Wilde retweeted
TL;DR •Numerical mismatch can derail training: in a Fireworks GLM 5.2 experiment, the same algorithm and data produced collapsing reward without alignment and stable reward with alignment over 25 steps. •Training MoE models adds complication to alignment: our Qwen3.5-MoE investigation found that differences in how expert outputs were combined caused disagreement even when one implementation used higher precision. •These discrepancies can distort training updates and resemble problems with data, rewards, or learning rate, sending teams through expensive experiments that leave the underlying cause unresolved. •Frontier training requires co-optimized training and inference: Fireworks develops and validates the trainer and rollout engine together so teams can scale reinforcement learning with alignment across numerics, kernels, and MoEs.
Rollouts drive most of RL's compute cost. But splitting rollout and training across engines risks numerical mismatches, and in MoE models, that can even send tokens to different experts. We co-build both engines at Fireworks, so training stays fast and consistent. Learn more: bit.ly/4ALjga5
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Heather Wilde retweeted
The best news today. We got into NeurIPS!
. @Madisonkanna our tutorial got accepted to the NeurIPS 2026 Education Track! 🎉 Kudos to the community, especially @zhijianliu_ and @jianchen1799 from @inco_ai for their generous help! Thank you to the program chairs and reviewers for the thoughtful comments and feedback. See y'all at Neurips! 🤗 x.lingyaoai.com/lily_gpupoor/status/20…
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Heather Wilde retweeted
Rollouts drive most of RL's compute cost. But splitting rollout and training across engines risks numerical mismatches, and in MoE models, that can even send tokens to different experts. We co-build both engines at Fireworks, so training stays fast and consistent. Learn more: bit.ly/4ALjga5
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Heather Wilde retweeted
"Near identical composition, but Ember-1 used 9x less thinking tokens and was 4x faster at half the cost." Love the analysis between @FireworksAI_HQ Ember-1 and Kimi K3 🔥
I compared Ember-1 and Kimi K3's paintings made with Javascript for the same prompt. Congrats to the @FireworksAI_HQ team! Analysis & examples below 🎨👇
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Heather Wilde retweeted
So cool!
Replying to @kickingkeys
The essence of the base model (Kimi K3) is clearly visible in the paintings but Ember-1 expresses ideas in its own way. From my testing across 124 prompts Ember-1 costs ~20% less, spends ~36% less on reasoning tokens while being 2x faster.
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Heather Wilde retweeted
It’s ready now!
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Heather Wilde retweeted
Day 2 at @AIconference with my favorite @FireworksAI_HQ team 🎆 come talk to our team about model inference, training, and more 🙌
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Heather Wilde retweeted
Congrats to the @Fulcrum_inc team on Echo! Final training runs were done entirely via Fireworks' serverless training API, on a Kimi K3 LoRA (rank 32). Make sure to read their writeup, which includes the "persona post-training" approach and how they landed a $4.5k total training cost.
For our final training run and deployment we used @FireworksAI_HQ's with Kimi K3 - it was quite convenient
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Heather Wilde retweeted
Nice to see @FireworksAI_HQ leading the open model inference economy 🎆
The latest Interconnects plot - showing the exponential growth of the open model inference economy. Plot is showing the daily tokens processed by the leading companies, based on public disclosures (for Together, Baseten, and Fireworks) and the OpenRouter API. I underestimated OpenRouter's growth.
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Heather Wilde retweeted
To every one else out there, thinking training is too costly, IT'S NOT! you can beat frontier models on your domain specific tasks for less than $5k as demonstrated by this exciting launch from @fulcrum_inc Congratulations @fulcrum_inc ! Hello Echo :)
For our final training run and deployment we used @FireworksAI_HQ's with Kimi K3 - it was quite convenient
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Heather Wilde retweeted
🎆 @FireworksAI_HQ Ember-1: Built on Kimi K3, fewer tokens, same quality!
Fireworks' Ember-1 is now on Vals. We tested it on our finance and legal benchmarks, and it performs close to Kimi K3 while using less reasoning tokens per turn.
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Heather Wilde retweeted
i found the famous @sophiamyang and she agreed to take a selfie with me then i asked her to approve my time off (she did!) fireworks devrel team is 🫰
Code & Cocktails 🍸 getting started 🎆 already leaning lots from the community on how and why they love @FireworksAI_HQ 💖
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Heather Wilde retweeted
GLM 5.3 Flash is now available for training on the Serverless Training API - accessible to all, with both vision and text support. This model performs great on our benchmarks for agentic coding, document analysis, and tool use while being cost-efficient to serve. Get started today: docs.fireworks.ai/fine-tunin…
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Heather Wilde retweeted
Code & Cocktails 🍸 getting started 🎆 already leaning lots from the community on how and why they love @FireworksAI_HQ 💖
Join our code & cocktail 🍸 tonight in SF 🎆
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Heather Wilde retweeted
Join our code & cocktail 🍸 tonight in SF 🎆
SF, come out tomorrow night for rooftop drinks and open office hours with the Fireworks team. Want to walk out having actually fine-tuned, evaluated, and deployed a model on Fireworks that night? We can do that too. Bring your laptop. RSVP: luma.com/270tizh3
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Heather Wilde retweeted
i'll be here tonight hiding behind @Prof_OZ as he drops bars about training your own models sinan, is there any POSSIBLE way we can get you to rap about deploying models at this thing? i will pay /top dollar/
SF, come out tomorrow night for rooftop drinks and open office hours with the Fireworks team. Want to walk out having actually fine-tuned, evaluated, and deployed a model on Fireworks that night? We can do that too. Bring your laptop. RSVP: luma.com/270tizh3
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Heather Wilde retweeted
Fireworks is at @AIconference! Find us at Booth #245 (Shed A) and swing by our Coffee Lounge in the Innovation Hub. Catch our own Jetashree Ravi's breakout session, and @RobFergusonIII on the Day Two keynote stage. See you on the show floor!
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