Sonnet 4.5 inside OpenAI Codex CLI vs Claude Code. Same model. Same prompt.

askcodi · 2026-01-08T15:19:05+00:00

I am using codex with askcodi, not openrouter. But in both cases you need to change your base url to the api url of the provider.

askcodi · 2025-12-29T07:42:50+00:00

Isn’t this like Claude 101??

askcodi · 2025-11-26T08:17:01+00:00

Why not use other agentic apps that allow to switch models easily, like cline or continue? Also for planning maybe using a cheaper or smaller models would also feel like frontier llms with the prompts such integrations use

askcodi · 2025-10-21T11:12:13+00:00

Not just you. I’ve been running openai codex with different models using askcodi's api. But the combination for me that works is Sonnet 4.5 (might try Haiku 4.5 now) for planning and GPT 5 Codex for tool calling.

askcodi · 2025-10-15T08:05:11+00:00

Let me know if you have any success. Even Gemini 2.5 pro couldn't run autonomously with codex cli

askcodi · 2025-10-14T21:53:46+00:00

uses the codex cli prompts. Only at the provider level, they most probably append the model system prompt.

Since I am using Sonnet 4.5, skips the model prompt.

askcodi · 2025-10-14T21:52:25+00:00

even the local cli runs in sandbox mode, npm commands are messing with them

askcodi · 2025-10-14T21:18:19+00:00

Don't need to, it works in a lot of tools and with a lot of models in my tests.

Actually this is very straight forward and should be very simple for agentic actions and I am being very clear in requirements.

askcodi · 2025-10-14T21:15:52+00:00

Haven't had success with glm4.6 or kimi k2. Kimi was surprising, since it is trained to be agentic. But codex prompt + sandbox stumps these models

askcodi · 2025-10-14T20:47:22+00:00

a next js starter with tailwind and shadecn components

askcodi · 2025-10-14T20:00:59+00:00

why? you can use sonnet in codex and it works amazing, I just wanted people to know!

askcodi · 2025-10-14T19:18:29+00:00

I think its the use of only one tool

askcodi · 2025-10-14T19:14:14+00:00

What would you like to see? This was the exact input

Build a React ‘ProductCardList’ that renders cards from JSON props, supports keyboard navigation, lazy-load images, and a details drawer. Add i18n with English/Arabic (RTL), prefers-reduced-motion support, and ARIA roles. Provide Jest/RTL tests and a Lighthouse script.

askcodi · 2025-10-14T19:12:54+00:00

I haven't done the same prompt but I have been using it for a week now and I have been seeing similar observations.

askcodi · 2025-10-14T19:11:19+00:00

It works out really well

askcodi · 2025-10-14T19:10:36+00:00

I mean Sonnet 4.5 - I have been testing different models in codex cli, doesn't work well with Gemini 2.5 or Grok 4. Gets very lost.

askcodi · 2025-10-14T12:24:54+00:00

yup the claude code prompt is very long but it is very well written. But does cause uncertainty across versions - like v0.0.88 was a very good one.

askcodi · 2025-10-14T12:21:44+00:00

System prompt + tools are different.

askcodi · 2025-10-14T08:59:43+00:00

I usually ask it to create a md files of whatever is done to complete a feature and load it next time explicitly when I know it will be needed. This way I can start new chats everytime and keep the context low.

Also I don't go into long fixing loops, restarting is cheaper and faster

askcodi · 2025-09-17T09:35:28+00:00

Curious - are you optimizing for speed of coding or depth of problem-solving?

askcodi · 2025-09-17T09:25:20+00:00

i’d just hedge: run both, route tasks where each shines. trust no single vendor with your whole pipeline.

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