GPT-5.4 vs Claude Sonnet 5
How GPT-5.4 (OpenAI) and Claude Sonnet 5 (Anthropic) compare on price, context window and best-fit use case.
In short: GPT-5.4 is best for Most production apps wanting near-flagship quality at roughly half the flagship price, while Claude Sonnet 5 suits Running AI agents affordably, multi-step automation, coding assistants and high-scale chat where you want near-flagship quality at lower cost. On price it's $2.50 vs $2.00 per 1M input tokens; on context, ~1M tokens (922K input, 128K output) vs 1M tokens (verify — not yet published for Sonnet 5).
| Spec | GPT-5.4 | Claude Sonnet 5 |
|---|---|---|
| Developer | OpenAI | Anthropic |
| Context window | ~1M tokens (922K input, 128K output) | 1M tokens (verify — not yet published for Sonnet 5) |
| Input price /1M | $2.50 | $2.00 |
| Output price /1M | $15.00 | $10.00 |
| Modalities | text, image | text, image |
| Best for | Most production apps wanting near-flagship quality at roughly half the flagship price. | Running AI agents affordably, multi-step automation, coding assistants and high-scale chat where you want near-flagship quality at lower cost. |
GPT-5.4
- Excellent price-to-performance
- Strong reasoning and coding
- 1M context
- Mature ecosystem and tooling
Claude Sonnet 5
- Highly agentic (planning + autonomous tool/browser/terminal use)
- Strong agentic coding
- Near-Opus-4.8 quality at much lower cost
- Great for high-scale agents and chatbots