GPT-6.1 Sol vs GPT-5.5
GPT-6.1 Sol costs less on both: $0.60 in and $3.00 out per million tokens, against $1.50 in and $9.00 out for GPT-5.5. Both on one key at UplinkSwitch, each next to its developer's list price.
Prices · per million tokens, USD
| Tokens | GPT-6.1 Solgpt-6.1-sol | GPT-5.5gpt-5.5 |
|---|---|---|
| Input | $0.60OpenAI lists $2.00 · 70% under | $1.50OpenAI lists $5.00 · 70% under |
| Cached input | $0.06OpenAI lists $0.10 · 40% under | $0.15OpenAI lists $0.50 · 70% under |
| Output | $3.00OpenAI lists $10.00 · 70% under | $9.00OpenAI lists $30.00 · 70% under |
| Formats | OpenAI SDK | OpenAI SDK |
| Developer | OpenAI | OpenAI |
List price: each developer's published rate, read October 2026. A model with no cached rate bills cached tokens at its input rate. Live from GET https://api.uplinkswitch.com/v1/catalog.
Same key, same URL
One base URL and one key serve both models. The request below calls GPT-6.1 Sol; put gpt-5.5 in the model field to call GPT-5.5 instead.
shell
curl https://api.uplinkswitch.com/v1/chat/completions \
-H "authorization: Bearer sk-uplink-live-..." \
-H "content-type: application/json" \
-d '{"model":"gpt-6.1-sol","messages":[{"role":"user","content":"Hello"}]}'Model pages: GPT-6.1 Sol, GPT-5.5. Pricing by family: GPT. More comparisons: Claude Opus 5.5 vs GPT-6.1 Sol, Claude Sonnet 5.5 vs GPT-6.1 Sol, GPT-6.1 Sol vs Gemini 3.1 Pro Preview, Grok 4.6 vs GPT-6.1 Sol.
Questions
- Which costs less, GPT-6.1 Sol or GPT-5.5?
- GPT-6.1 Sol costs less on both: $0.60 in and $3.00 out per million tokens, against $1.50 in and $9.00 out for GPT-5.5.
- Can I switch between them by changing the model id?
- Yes. Both answer in the OpenAI SDK format at the same base URL with the same key. Change the model id from gpt-6.1-sol to gpt-5.5 and nothing else.
- Is there a subscription?
- No. Prepaid credit from $10, with no subscription or monthly fee. Each top-up locks your prices for 30 days.