Comparison
Claude Opus 4.8 vs GPT-5.5 side by side
Compare per-token pricing for Claude Opus 4.8 and GPT-5.5. Both run on FrugalDev's prepaid, drop-in-compatible gateway — one key, up to 84% below official list price, no subscription.
Per-token pricing
USD / 1M tokens| Model | Input | Output | Cache R | Cache W | Official I/O | Save |
|---|---|---|---|---|---|---|
| Claude Opus 4.8 | $2.27 | $11.32 | $0.23 | $2.83 | $5 / $25 | −55% |
| GPT-5.5 | $0.80 | $4.76 | $0.080 | $0.080 | $5 / $30 | −84% |
Frequently asked questions
Is Claude Opus 4.8 or GPT-5.5 cheaper?
On FrugalDev, GPT-5.5 has the lower output rate at $4.76/1M tokens. Both are billed per token with no subscription.
Can I use both Claude Opus 4.8 and GPT-5.5 with one key?
Yes. A single FrugalDev prepaid key reaches every model on the network — switch between Claude Opus 4.8 and GPT-5.5 by changing the model string, with no separate accounts or billing.
Are these the real models?
Yes — both are the same frontier models from Anthropic and OpenAI, reached through our compatible gateway at a fraction of list price.