World Model · podcast knowledge graph

Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)

2026-07-13 · 56 min · 50 entities

episode page audio

Asserted relationships

  • → references OpenAI company
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://github.com/openai/codex
  • → references Colossus Supercomputer person
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/Colossus_(supercomputer
  • → references SystemVerilog concept
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/SystemVerilog
  • → references Estimating The Size Of Claude Opus website
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://unexcitedneurons.substack.com/p/estimating-the-size-of-claude-opus
  • → founded Cosine company
    0.54
    evidence rules-v4
    co-founder of Cosine
  • → founded Cosine company
    0.54
    evidence rules-v4
    co-founder of Cosine
  • → works at Cosine company
    0.50
    evidence rules-v4
    co-founder of Cosine
  • → works at Cosine company
    0.50
    evidence rules-v4
    co-founder of Cosine
  • → discusses Technology company
    0.40
    evidence rules-v4
    Feed category: Technology
  • → references anthropic.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/
  • → references Mlst website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://notion.com/mlst
  • → references Cohere company
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cohere.com/
  • → references Claude Code person
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/claude-code
  • → references arcprize.org website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://arcprize.org/
  • → references deepseek.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://deepseek.com/
  • → references llama.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://llama.com/
  • → references karpathy.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://karpathy.ai/
  • → references mistral.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/
  • → references Data Center person
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://nvidia.com/en-us/data-center/dgx-b300
  • → references swebench.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://swebench.com/
  • → references cosine.sh website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cosine.sh/
  • → references isambard.ac.uk website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://isambard.ac.uk/
  • → references z.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://z.ai/
  • → references Gpt Oss 120b website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/openai/gpt-oss-120b
  • → references Devstral website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/news/devstral
  • → references Kimi K2 Instruct website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/moonshotai/Kimi-K2-Instruct

Entities found in this episode

websites 30

  • 0.90
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://unexcitedneurons.substack.com/p/estimating-the-size-of-claude-opus
  • 0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://unexcitedneurons.substack.com/p/estimating-the-size-of-claude-opus
  • mentioned anthropic.com website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/
  • mentioned Mlst website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://notion.com/mlst
  • mentioned arcprize.org website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://arcprize.org/
  • mentioned deepseek.com website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://deepseek.com/
  • mentioned llama.com website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://llama.com/
  • mentioned karpathy.ai website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://karpathy.ai/
  • mentioned mistral.ai website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/
  • mentioned swebench.com website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://swebench.com/
  • mentioned cosine.sh website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cosine.sh/
  • mentioned isambard.ac.uk website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://isambard.ac.uk/
  • mentioned z.ai website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://z.ai/
  • mentioned Gpt Oss 120b website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/openai/gpt-oss-120b
  • mentioned Devstral website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/news/devstral
  • mentioned Kimi K2 Instruct website
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/moonshotai/Kimi-K2-Instruct
  • references anthropic.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/
  • references Mlst website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://notion.com/mlst
  • references arcprize.org website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://arcprize.org/
  • references deepseek.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://deepseek.com/
  • references llama.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://llama.com/
  • references karpathy.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://karpathy.ai/
  • references mistral.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/
  • references swebench.com website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://swebench.com/
  • references cosine.sh website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cosine.sh/
  • references isambard.ac.uk website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://isambard.ac.uk/
  • references z.ai website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://z.ai/
  • references Gpt Oss 120b website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/openai/gpt-oss-120b
  • references Devstral website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://mistral.ai/news/devstral
  • references Kimi K2 Instruct website
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://huggingface.co/moonshotai/Kimi-K2-Instruct

companys 11

  • mentioned OpenAI company
    0.90
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://github.com/openai/codex
  • references OpenAI company
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://github.com/openai/codex
  • mentioned Cosine company
    0.68
    evidence rules-v4
    co-founder of Cosine
  • founded Cosine company
    0.54
    evidence rules-v4
    co-founder of Cosine
  • founded Cosine company
    0.54
    evidence rules-v4
    co-founder of Cosine
  • mentioned Technology company
    0.50
    evidence rules-v4
    Feed category: Technology
  • works at Cosine company
    0.50
    evidence rules-v4
    co-founder of Cosine
  • works at Cosine company
    0.50
    evidence rules-v4
    co-founder of Cosine
  • mentioned Cohere company
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cohere.com/
  • discusses Technology company
    0.40
    evidence rules-v4
    Feed category: Technology
  • references Cohere company
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://cohere.com/

persons 6

  • mentioned Colossus Supercomputer person
    0.90
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/Colossus_(supercomputer
  • references Colossus Supercomputer person
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/Colossus_(supercomputer
  • mentioned Claude Code person
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/claude-code
  • mentioned Data Center person
    0.45
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://nvidia.com/en-us/data-center/dgx-b300
  • references Claude Code person
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://anthropic.com/claude-code
  • references Data Center person
    0.38
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://nvidia.com/en-us/data-center/dgx-b300

concepts 2

  • mentioned SystemVerilog concept
    0.90
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/SystemVerilog
  • references SystemVerilog concept
    0.77
    evidence rules-v4
    Link in episode "Why a Nation Can't Outsource Its Frontier AI - Alistair Pullen (Cosine AI)": https://en.wikipedia.org/wiki/SystemVerilog

podcasts 1

Episode description as stored
This episode is sponsored by Notion. Learn more about Notion's Developer Platform today at https://notion.com/mlst Britain's most capable coding model can't be exported, and that ban is the whole reason Cosine set out to build one from scratch. Alistair Pullen, CEO and co-founder of Cosine, sits down with Tim Scarfe to explain how a frontier system he calls Fable, locked behind US export controls, became the founding case for a UK sovereign model trained on the Isambard supercomputer in Bristol. The bet underneath it is economic. Pullen argues that an inference company, rather than a training-first lab, doesn't need billions to compete: millions, a national compute allocation, and a consortium feedback loop can be enough. From there it gets into the machinery, why open-weight models still trail the frontier on size, active parameters and data, the mixture-of-experts versus dense trade-off and why active params dominate how a model actually feels, and the edge that real coding trajectories confer. The back half is about making agents trustworthy. Pullen makes the case for beating "slop" by rewarding the process instead of the final answer, reframes code review as runtime proof (spin the bug up in a VM and force the agent to actually exploit it), and walks through Swarm, Cosine's system running hundreds of sub-agents in one shot. It ends on why memory is still an unsolved hack, how synthetic graders let you run RL on tasks with no built-in test, and why Pullen reads US export controls as an accidental gift, with a supply-chain sting in the tail. --- TIMESTAMPS: 00:00:00 The sovereign mandate and the Fable ban 00:04:02 Millions vs billions: the inference-company model 00:07:19 The consortium feedback loop 00:07:40 Why open models lag the frontier 00:14:59 MoE vs dense, and why active params matter 00:16:29 Trajectories: the process-data advantage 00:19:48 Beating slop: reward the process, not the answer 00:26:06 Reusable abstractions and the epistemic wall 00:29:56 Code review becomes runtime proof 00:37:32 Do agentic harnesses still matter? 00:40:35 Swarm: orchestrating hundreds of sub-agents 00:45:14 Why memory is still unsolved 00:48:25 Synthetic data and graders for RL 00:53:09 The US export gift and supply-chain risk --- REFERENCES: organization: [00:01:15] Cosine https://cosine.sh [00:04:14] Mistral AI https://mistral.ai [00:05:50] Anthropic https://www.anthropic.com [00:07:42] Cohere https://cohere.com [00:08:36] DeepSeek https://www.deepseek.com tool: [00:02:52] Isambard-AI https://isambard.ac.uk [00:05:56] Colossus (xAI) https://en.wikipedia.org/wiki/Colossus_(supercomputer) [00:07:52] GLM (Z.ai) https://z.ai [00:11:52] NVIDIA B300 https://www.nvidia.com/en-us/data-center/dgx-b300/ [00:15:37] gpt-oss-120b https://huggingface.co/openai/gpt-oss-120b [00:15:52] Devstral 2 https://mistral.ai/news/devstral [00:16:01] Llama 70b https://www.llama.com [00:17:05] Claude Code https://www.anthropic.com/claude-code [00:26:23] ARC-AGI (Francois Chollet) https://arcprize.org [00:40:38] Swarm (Cosine) https://cosine.sh [00:40:50] OpenAI Codex https://github.com/openai/codex [00:41:16] Lumen Outpost (Cosine) https://cosine.sh [00:41:18] Kimi K2 (Moonshot) https://huggingface.co/moonshotai/Kimi-K2-Instruct [00:49:55] SWE-bench https://www.swebench.com [00:52:40] SystemVerilog https://en.wikipedia.org/wiki/SystemVerilog person: [00:23:40] Andrej Karpathy https://karpathy.ai paper: [00:27:10] GRPO (DeepSeekMath) https://arxiv.org/abs/2402.03300 [00:27:13] GSPO https://arxiv.org/abs/2507.18071 Incompressible Knowledge Probes, Bojie Li https://arxiv.org/pdf/2604.24827 Estimating the Size of Claude Opus 4.5/4.6 https://unexcitedneurons.substack.com/p/estimating-the-size-of-claude-opus --- ReScript: https://app.rescript.info/session/5852d2b884c4ce4b?share=10b9799160845bb11779f8ac6cd3124f