# OpenAI Codex tests GPT‑5.6 and plans major updates

**Published:** 2026-07-04T14:55:23.846Z  
**Topic:** Openai%5C  
**Sentiment:** neutral  
**Publisher:** TrendWatcher — https://www.trendwatcher.in/article/a0769db2-a7bf-4ab0-9497-3dfd99c25150

OpenAI’s Codex is now evaluating GPT‑5.6, with new cybersecurity features slated, while DeepSeek readies a V4 multimodal model and a rumored DeepSeek‑Kimi

OpenAI’s Codex platform is currently running advanced tests of GPT‑5.6, a next‑generation model that could set new performance benchmarks for AI‑driven coding and multimodal tasks [1]. The move matters because Codex’s enhancements—particularly around cybersecurity tooling—are poised to deepen its appeal to enterprise developers seeking tighter security and higher productivity.

| At a glance | |
|---|---|
| Model under test | GPT‑5.6 |
| Platform | OpenAI Codex (coding assistant) |
| Upcoming Codex features | Cybersecurity‑focused tools (speculated) |
| DeepSeek milestone | Version 4 multimodal model launch |
| Kimi IPO valuation (rumored) | $18 B, potential double post‑merger |

## GPT‑5.6 in Codex testing  
OpenAI reports that GPT‑5.6 is in “advanced testing phases” and is being evaluated inside the Codex environment, which specializes in generating code and supporting software development workflows [1]. Compared with earlier releases such as GPT‑5.4, the new iteration is expected to deliver higher reasoning depth and broader multimodal capabilities, although concrete performance metrics have not yet been disclosed. The testing aligns with OpenAI’s pattern of monthly model upgrades, a cadence that keeps its offerings ahead of rivals like MTOS in natural‑language and multimodal benchmarks.

## Codex upgrade roadmap and competitive context  
Speculation around the upcoming Codex update points to the addition of dedicated cybersecurity features—tools that could automatically detect vulnerable code patterns and suggest mitigations. If realized, these capabilities would differentiate Codex from competing developer assistants such as Cloud Code, whose adoption rates are reportedly being outpaced by Codex [1]. The anticipated “super‑app” approach, integrating plugins and workflow extensions, would further embed Codex into developers’ daily toolchains, potentially raising its market share among enterprise software teams.

## Parallel AI moves: DeepSeek‑Kimi and V4 launch  
In parallel, Chinese AI lab DeepSeek is preparing to launch Version 4 of its multimodal model, which will combine text, image, and audio processing in a single architecture [1]. This release aims to offer a cost‑effective alternative to resource‑intensive models from competitors. Meanwhile, a rumored merger between DeepSeek and Kimi could create a dominant open‑source AI entity; analysts suggest the deal might double Kimi’s IPO valuation from its current $18 billion estimate [1]. The consolidation would pool resources to accelerate innovation and could shift the competitive balance in the global AI market.

## What to watch  
- **Codex rollout** – Monitor OpenAI’s announcement of the next Codex version, especially any confirmed cybersecurity tool releases.  
- **DeepSeek V4 launch** – Track the official release date and performance benchmarks of DeepSeek’s Version 4 multimodal model.  
- **DeepSeek‑Kimi merger progress** – Watch regulatory filings or corporate statements that confirm the merger and any revised valuation figures.

These developments underscore a rapid escalation in AI model capabilities and strategic partnerships, raising questions about how quickly developer tools can integrate advanced security features and whether open‑source consolidations will reshape the competitive landscape.

## Sources
1. Geeky Gadgets — [OpenAI is Reportedly Testing Its Unreleased ChatGPT 5.6 Model Inside Codex](https://www.geeky-gadgets.com/google-pentagon-classified-ai-deal/)
2. TechRepublic — [OpenAI’s New Custom Chip: 5 Things You Should Know](https://www.techrepublic.com/article/news-openai-jalapeno-ai-inference-chip/)

---
Cite as: TrendWatcher, "OpenAI Codex tests GPT‑5.6 and plans major updates", https://www.trendwatcher.in/article/a0769db2-a7bf-4ab0-9497-3dfd99c25150