§11Head-to-head

Claude Opus 4.7,
vs ChatGPT (GPT-5.5)

The stylist versus the Swiss army knife — which one truly earns your twenty euros a month?

On paper the gap is tiny: 9.1 against 8.8. In daily use it is another story. Anthropic refined the prose; OpenAI broadened the product surface. We had both write, code and reason for seven days.

Anthropic
Claude Opus 4.7

« Le premier choix pour écrire et coder. Avec Claude Design (avril 2026), Anthropic empiète aussi sur Figma. »

20 €/mo · 500k ctx · RGPD 8.4/10
vs
OpenAI
ChatGPT (GPT-5.5)

« Couteau suisse omnimodal natif. Reprend la tête sur le code agentique et le reasoning long. »

22 €/mo · 1000k ctx · RGPD 6.2/10
§02Axis by axis
6 axes · ✓ = leader
Writing
more = better
Claude9.4/10
ChatGPT8.9/10
Code
more = better
Claude9.2/10
ChatGPT9/10
Reasoning
more = better
Claude9.3/10
ChatGPT9.2/10
GDPR
more = better
Claude8.4/10
ChatGPT6.2/10
Speed
more = better
Claude7.1/10
ChatGPT8.7/10
Price
less = better
Claude20€/mo
ChatGPT22€/mo
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§ RadarOnAI verdict

Claude wins on deep work — editorial writing, long reasoning, clean code. ChatGPT stays untouchable when you need a single app for everything (voice, image, code interpreter, GPTs). If you write for a living, Claude. If you tinker on every front, ChatGPT.

Winner: Claude
vs