Quick verdict. There is no single winner — it depends on the job. Pick Claude (Sonnet 4.6 / Fable 5) for coding, large documents, and regulated data. Pick ChatGPT (GPT-5.4 / GPT-4o) for general business tasks, multimodal speed, and the largest integration ecosystem.
Side by side: all 8 factors
Workhorse tiers compared — Claude Sonnet 4.6 vs GPT-5.4. Higher is better.
| Factor | Claude Sonnet 4.6 | GPT-5.4 | Winner |
|---|---|---|---|
| Task Performance | 89 | 92 | ChatGPT |
| Cost Efficiency | 76 | 74 | Claude |
| Context Window | 88 (200k) | 78 (128k) | Claude |
| Speed / Latency | 82 | 86 | ChatGPT |
| Safety & Reliability | 93 | 88 | Claude |
| Data Privacy | 94 | 82 | Claude |
| Integration Quality | 95 | 97 | ChatGPT |
| Adoption Ease | 91 | 98 | ChatGPT |
| Weighted score | 87 | 85 | Claude |
Task-by-task winner
| Task | Winner | Why |
|---|---|---|
| Coding | Claude | Higher SWE-bench, larger context for codebases |
| Long documents | Claude | 200k context with strong fidelity |
| Writing | Tie | Both excellent; Claude more measured, GPT more versatile |
| Real-time voice / chat | ChatGPT | GPT-4o native audio and speed |
| Multimodal / vision | ChatGPT | Broader multimodal tooling |
| Regulated / private data | Claude | Stronger privacy posture and safety |
| Plug-and-play integrations | ChatGPT | Largest ecosystem of connectors |
Pricing compared
| Tier | Claude | ChatGPT |
|---|---|---|
| Frontier | Fable 5 — $10/$50 per M | GPT-5.5 — $15/$30 per M |
| Workhorse | Sonnet 4.6 — $3/$15 per M | GPT-5.4 — $2.50/$15 per M |
| Budget | Haiku 4.5 — $0.25/$1.00 per M | GPT-4o — $2.50/$10 per M |
| Consumer plan | $20/month | $20/month |
Compare real monthly cost for your volume →
When to use which
Choose Claude
- Coding and large-codebase work
- Long-document analysis
- Regulated or sensitive data
Choose ChatGPT
- The widest integration ecosystem
- Real-time voice and multimodal
- Fastest team adoption
What changed in June 2026
- Claude's independent SWE-bench lead widened its advantage for agentic coding.
- GPT-5.4 settled in as OpenAI's best-value flagship, beating GPT-4o on reasoning at similar cost.
- Both shipped stronger enterprise data controls; Claude retains the edge on default privacy posture.
Still deciding? The match engine picks between them for your exact task, budget and privacy needs.