Gemini 3.8 Flash vs GPT-6 Sol
Gemini 3.8 Flash costs less on both: $0.45 in and $2.25 out per million tokens, against $0.60 in and $3.00 out for GPT-6 Sol. Both on one key at UplinkSwitch, each next to its developer's list price.
Prices · per million tokens, USD
| Tokens | Gemini 3.8 Flashgemini-3.8-flash | GPT-6 Solgpt-6-sol |
|---|---|---|
| Input | $0.45Google lists $0.75 · 40% under | $0.60OpenAI lists $2.00 · 70% under |
| Cached input | $0.045Google lists $0.075 · 40% under | $0.12OpenAI lists $0.20 · 40% under |
| Output | $2.25Google lists $3.75 · 40% under | $3.00OpenAI lists $10.00 · 70% under |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| Max output | 65,536 tokens | 128,000 tokens |
| Input | text, image, audio, video | text, image |
| Released | 2026-09-02 | 2026-09-22 |
| Formats | OpenAI SDK, Gemini SDK | OpenAI SDK |
| Developer | 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.
What the same work costs · USD, here and at list
| Work | Gemini 3.8 Flash | GPT-6 Sol |
|---|---|---|
| 1,000 chat requests | $2.03list $3.38 | $2.70list $9.00 |
| 100 long documents | $2.70list $4.50 | $3.60list $12.00 |
| A month of both, daily | $141.75list $236.25 | $189.00list $630.00 |
A chat request is 2,000 input and 500 output tokens; a long document is 50,000 in and 2,000 out; the month is 1,000 chats and 100 documents a day for 30 days, uncached. Over that month Gemini 3.8 Flash costs $47.25 less here.
Same key, same URL
One base URL and one key serve both models. The request below calls Gemini 3.8 Flash; put gpt-6-sol in the model field to call GPT-6 Sol instead.
shell
curl https://api.uplinkswitch.com/v1/chat/completions \
-H "authorization: Bearer sk-uplink-live-..." \
-H "content-type: application/json" \
-d '{"model":"gemini-3.8-flash","messages":[{"role":"user","content":"Hello"}]}'Model pages: Gemini 3.8 Flash, GPT-6 Sol. Pricing by family: Gemini, GPT. More comparisons: Claude Sonnet 5.5 vs Gemini 3.8 Flash, Gemini 3.8 Flash vs GPT-6.1 Sol, Claude Haiku 5.5 vs Gemini 3.8 Flash, GPT-6.1 Sol vs GPT-6 Sol.
Questions
- Which costs less, Gemini 3.8 Flash or GPT-6 Sol?
- Gemini 3.8 Flash costs less on both: $0.45 in and $2.25 out per million tokens, against $0.60 in and $3.00 out for GPT-6 Sol.
- 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 gemini-3.8-flash to gpt-6-sol 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.
- Is Gemini 3.8 Flash better than GPT-6 Sol?
- Better depends on the job; this page compares what the catalog can measure. Gemini 3.8 Flash costs less on both: $0.45 in and $2.25 out per million tokens, against $0.60 in and $3.00 out for GPT-6 Sol. Gemini 3.8 Flash takes 1,048,576 tokens of context against 1,050,000 for GPT-6 Sol. GPT-6 Sol is the newer release. Both run on the same key, so the fair test is your own prompt sent to each model id.