Claude Sonnet 5.5 vs GPT 5.4 Nano
anthropic/claude-sonnet-5.5 · openai/gpt-5.4-nano
As of November 1, 2026, GPT 5.4 Nano is the cheaper API on UberLLM: $0.0390 per million input tokens and $0.2437 per million output, versus $0.1039 / $0.5197 for Claude Sonnet 5.5, about 54% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GPT 5.4 Nano to cut cost; choose Claude Sonnet 5.5 when context size wins. Claude Sonnet 5.5 carries the larger context window (1,000,000 vs 400,000 tokens), which can matter for long-document work.
Claude Sonnet 5.5 vs GPT 5.4 Nano, side by side
| Spec | Claude Sonnet 5.5 | GPT 5.4 Nano |
|---|---|---|
| Price · input / 1M | $0.1039 | $0.0390 |
| Price · output / 1M | $0.5197 | $0.2437 |
| Context length | 1,000,000 | 400,000 |
| Max output tokens | 128,000 | 128,000 |
| Input modalities | text, image, file | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 94.8% off | 80.5% off |
| First token, median (7 days) | 2.9 s (173 requests) | — |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Claude Sonnet 5.5 vs GPT 5.4 Nano — FAQ
Is Claude Sonnet 5.5 or GPT 5.4 Nano cheaper?
GPT 5.4 Nano is cheaper on a blended token mix, by about 54%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Claude Sonnet 5.5 and GPT 5.4 Nano?
Claude Sonnet 5.5: $0.1039 in / $0.5197 out per 1M tokens. GPT 5.4 Nano: $0.0390 in / $0.2437 out per 1M tokens. That's roughly a 54% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 5.5 and GPT 5.4 Nano with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.