GPT-5.3-Codex-Spark vs Grok‑1
OpenAI GPT-5.3-Codex-Spark | SpaceXAI Grok‑1 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | SpaceXAI |
| Release date | Feb 12 2026 | Nov 3 2023 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Context window | 128k | — |
| Timeline | ||
| Release gap | Grok‑1 shipped 832 days before GPT-5.3-Codex-Spark | |
Which is better: GPT-5.3-Codex-Spark or Grok‑1?
GPT-5.3-Codex-Spark and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 832 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
GPT-5.3-Codex-Spark is proprietary, while Grok‑1 is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and Grok‑1 don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
Grok‑1 was released by SpaceXAI on Nov 3 2023.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. Grok‑1 is an open weight model released by SpaceXAI.
Other comparisons
GPT-5.3-Codex-Spark vs Claude Sonnet 5Grok‑1 vs Claude Sonnet 5GPT-5.3-Codex-Spark vs Gemini OmniGrok‑1 vs Gemini OmniGPT-5.3-Codex-Spark vs Muse Spark 1.1Grok‑1 vs Muse Spark 1.1GPT-5.3-Codex-Spark vs DeepSeek-V4-ProGrok‑1 vs DeepSeek-V4-ProGPT-5.3-Codex-Spark vs Mistral Medium 3.5Grok‑1 vs Mistral Medium 3.5GPT-5.3-Codex-Spark vs Kimi K2.7 CodeGrok‑1 vs Kimi K2.7 Code