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OpenAI Details Jalapeño Inference Chip Test Results

OpenAI posted early test results for its first custom inference chip and plans deployment by year-end.

OpenAIOP
Susan ZhangSZ
Liam FedusLF
22 Sources, 46d ago, first seen 46d ago

TLDR

OpenAI released early test results for Jalapeño, its first custom inference chip. OpenAI reported higher throughput and lower latency alongside better intelligence per watt. OpenAI stated it plans to begin deploying the chip in its compute infrastructure by year-end as the first step in a multigenerational roadmap. Replies on X praised the efficiency gains while others questioned the benchmarks and flagged potential software lock-in risks versus Nvidia.

Combined views

3M

22 Sources, first seen 46d ago

18K likes811 comments2.8K saves1.8K reposts

Sources

  1. ZE
    Zephyr@zephyr_z96 weeks ago

    HOLY SHEEET I don't think anyone can beat this chip at perf/Watt or perf/$ Congrats @itsclivetime @thehiphopswami

    • likes: 1.2K
    • replies: 36
    • bookmarks: 361
    • reposts: 84
  2. ZE
    Zephyr@zephyr_z96 weeks ago

    OpenAI's chip design team cooked hard https://twitter.com/zephyr_z9/status/2092256622567649535

    • likes: 633
    • replies: 22
    • bookmarks: 173
    • reposts: 42
  3. GB
    Gavin Baker@GavinSBaker6 weeks ago

    Impressive that Jalapeño outperforms the comparable TPU and is in the mix with Rubin. Credit where credit is due - first good ASIC outside of TPU/Trainium. However, will likely significantly underperform a disaggregated GPU/Trainum plus SRAM accelerator setup. Especially with…

    • likes: 1.6K
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    • reposts: 60
  4. LF
    Liam Fedus@LiamFedus6 weeks ago

    Data centers are power-limited and OpenAI's Jalapeño sets new frontiers for tokens per second per watt. Impressive and fast work from OpenAI's ASIC program. https://twitter.com/SemiAnalysis_/status/2092253723640598761

    • likes: 110
    • replies: 6
    • bookmarks: 13
    • reposts: 3
  5. YJ
    You Jiacheng@YouJiacheng6 weeks ago

    眩晕瘫坐,仿佛原子弹爆炸 https://twitter.com/YouJiacheng/status/2092280093766766949

    • likes: 64
    • replies: 3
    • bookmarks: 20
    • reposts: 1
  6. ZE
    Zephyr@zephyr_z96 weeks ago

    YES SIR https://twitter.com/YouJiacheng/status/2092280093766766949

    • likes: 78
    • replies: 8
    • bookmarks: 25
    • reposts: 2

Combined views

3M

22 Sources, first seen 46d ago

18K likes811 comments2.8K saves1.8K reposts

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JalapeñoOpenAINvidiaGavin Baker

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Featured Source
YJYou Jiacheng@YouJiacheng8:57 AM · Aug 25, 2026
1538TECH

No MTP, No PD disaggregation, Pure TP, still beats NVIDIA's Vera Rubin NVL72 on a third-party model, with A0 stepping. And B0 is 25% better. NVIDIA GPUs become HBM wrappers.

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