Claude Sonnet 5 vs Gemini 3.5 Flash
anthropic/claude-sonnet-5 · google/gemini-3.5-flash
As of October 25, 2026, Claude Sonnet 5 is the cheaper API on UberLLM: $0.1500 per million input tokens and $0.7500 per million output, versus $0.3375 / $2.02 for Gemini 3.5 Flash — about 63% less on a blended 3:1 token mix. Both are reached through one OpenAI-compatible key and routed to the cheapest healthy seller, with no UberLLM fee added, so the price you see is the price you pay. Choose Claude Sonnet 5 to cut cost; choose Gemini 3.5 Flash when context size wins — Gemini 3.5 Flash carries the larger context window (1,048,576 vs 1,000,000 tokens), which can matter for long-document work.
Claude Sonnet 5 vs Gemini 3.5 Flash, side by side
| Spec | Claude Sonnet 5 | Gemini 3.5 Flash |
|---|---|---|
| Price · input / 1M | $0.1500 | $0.3375 |
| Price · output / 1M | $0.7500 | $2.02 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 64,000 | 65,536 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | Yes | — |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 93% off | 78% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown has no UberLLM fee added. Updated October 25, 2026.
Claude Sonnet 5 vs Gemini 3.5 Flash — FAQ
Is Claude Sonnet 5 or Gemini 3.5 Flash cheaper?
Claude Sonnet 5 is cheaper on a blended token mix, by about 63%. UberLLM routes every request to the cheapest healthy seller and bills the price shown, with no fee added.
What's the price difference between Claude Sonnet 5 and Gemini 3.5 Flash?
Claude Sonnet 5: $0.1500 in / $0.7500 out per 1M tokens. Gemini 3.5 Flash: $0.3375 in / $2.02 out per 1M tokens. That's roughly a 63% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 5 and Gemini 3.5 Flash 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.