Claude Sonnet 4.6 vs GPT-4o
Side-by-side comparison of Claude Sonnet 4.6 by Anthropic and GPT-4o by OpenAI on the 1vy AI gateway. Both models are accessible through a single OpenAI-compatible API key.
Pricing comparison
| Claude Sonnet 4.6 | GPT-4o | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $3.45 | $2.88 |
| Output / 1M tokens | $17.25 | $11.50 |
Which is cheaper?
GPT-4o has cheaper input tokens ($2.88/1M). GPT-4o has cheaper output tokens ($11.50/1M). Choose based on your workload's input/output ratio — chat/generation workloads usually favor cheaper output, while summarization/classification favors cheaper input.
One API key for both
On 1vy, switching between Claude Sonnet 4.6 and GPT-4o is a one-parameter change in your OpenAI SDK call. No separate provider accounts, no separate billing. Sign up at 1vy.ai/register for $1 free credit to test both models.
More comparisons: Claude Sonnet 4.6 details · GPT-4o details · full catalog