Twitter/X

Firebender announced availability of GPT-5.3-Codex-Spark on their platform (post…

2026-03-07 · 07:48 UTC ·@firebender_com ·0 min read

Brief

Firebender (post by @firebender_com on 2026-03-07) released GPT-5.3-Codex-Spark on their platform, promoting it as optimized for ultra-fast edits and iteration. Citing OpenAI, Spark can output >1,000 tokens/second; Firebender’s internal tests highlight gains on in-line changes and speeding the design process, and the announcement links to a demo video and invites users to try it on Firebender.

Why it matters

Firebender announced availability of GPT-5.3-Codex-Spark on their platform (post by @firebender_com, published 2026-03-07).

Key details

  • OpenAI's Spark model is claimed to output more than 1,000 tokens per second; Firebender reports internal tests show strong performance for in-line edits and faster design iteration.
  • Announcement includes a demo video and a direct call to try GPT-5.3-Codex-Spark on Firebender now.
Source evidence

title: @firebender_com: GPT-5.3-Codex-Spark is now out in Firebender!!

Optimized for ultra-fast edits and iteration, in our...
author: @firebendercom
contenttype: tweet
publication: Twitter/X
published: 2026-03-07T07:48:16+00:00
sourceurl: https://x.com/firebendercom/status/2030188770394284371

word_count: 50

GPT-5.3-Codex-Spark is now out in Firebender!!

Optimized for ultra-fast edits and iteration, in our internal tests it performs really well on in-line changes and speeding up the design process. As per OpenAI, Spark is designed to output more than 1000 tokens per second.

Check it out on Firebender now!!

Video