Pricing · Gemini
Gemini 3.8 Flash pricing: API price, cost per message and plans
What Gemini 3.8 Flash costs, three ways: Google's API price per token, what Gemini 3.8 Flash's replies actually cost in our test runs, and how many Gemini 3.8 Flash messages each llmwise plan includes. Every limit on Gemini 3.8 Flash is on its model page.
API prices checked against OpenRouter's Gemini 3.8 Flash page. Updated .
Short answer
Gemini 3.8 Flash's API price is $0.75 per million input tokens and $3.75 per million output tokens (Google's list price, September 2026; an introductory price, through December 31, 2026). In our 50 test runs a Gemini 3.8 Flash reply cost $0.0013 on average (median $0.00089), from $0.00066 a reply on RAG and answering from documents to $0.0028 on data analysis. In llmwise you pay per message instead: up to 250 Gemini 3.8 Flash messages a month on Pro ($20), 800 on Max ($50), 1,800 on Ultra ($100) and 4,000 on Studio ($200).
Gemini 3.8 Flash API pricing
Gemini 3.8 Flash through its API is billed per token: $0.75 in, $3.75 out per million tokens, as of September 2026.
| Input tokens | $0.75 per million |
|---|---|
| Output tokens | $3.75 per million |
| A typical Gemini 3.8 Flash message (4,000 in, 700 out) | $0.0056 |
| 1,000 typical Gemini 3.8 Flash messages | $5.63 |
| Typical Gemini 3.8 Flash messages for $1 | 177 |
| Whose price | Google's list price |
| Note | an introductory price, through December 31, 2026 |
What a Gemini 3.8 Flash reply cost in our test runs
We sent the same 50 test prompts to every model in llmwise on September 27, 2026, through OpenRouter with llmwise's own prompt and settings. Here's what each Gemini 3.8 Flash reply cost, job by job.
| Job | Gemini 3.8 Flash, per reply | Per 1,000 replies | Tokens in / out | Passed |
|---|---|---|---|---|
| Coding | $0.0020 | $1.95 | 518 / 417 | 5 of 5 |
| Writing | $0.0013 | $1.32 | 427 / 267 | 3 of 5 |
| Math | $0.0014 | $1.43 | 423 / 296 | 5 of 5 |
| Summarization | $0.00075 | $0.75 | 532 / 95 | 5 of 5 |
| Data analysis | $0.0028 | $2.76 | 678 / 601 | 4 of 5 |
| Customer support | $0.0016 | $1.64 | 559 / 325 | 4 of 5 |
| Translation | $0.00075 | $0.75 | 467 / 106 | 5 of 5 |
| SQL | $0.00074 | $0.74 | 542 / 90 | 5 of 5 |
| RAG and answering from documents | $0.00066 | $0.66 | 705 / 35 | 5 of 5 |
| Agents and tool use | $0.00087 | $0.87 | 512 / 129 | 5 of 5 |
Across all 50 Gemini 3.8 Flash replies: $0.0013 on average, $0.00089 at the median, $0.00047 for the cheapest and $0.0045 for the dearest. The Gemini 3.8 Flash replies averaged 536 tokens in and 236 out, against the typical message's 4,000 in and 700 out: each test prompt starts a new chat, while a reply deep in a long chat rereads all of it.
Gemini 3.8 Flash on each llmwise plan
In llmwise a Gemini 3.8 Flash message is one of a published count, however long the reply runs, and you see what's left before you send.
Free: Gemini 3.8 Flash is in the one-time trial of 5 messages, no card needed.
Pro, $20 a month: up to 250 Gemini 3.8 Flash messages a month, which is $0.08 a Gemini 3.8 Flash message if every message goes to Gemini 3.8 Flash.
Max, $50 a month: up to 800 Gemini 3.8 Flash messages a month, which is $0.06 a Gemini 3.8 Flash message if every message goes to Gemini 3.8 Flash.
Ultra, $100 a month: up to 1,800 Gemini 3.8 Flash messages a month, which is $0.06 a Gemini 3.8 Flash message if every message goes to Gemini 3.8 Flash.
Studio, $200 a month: up to 4,000 Gemini 3.8 Flash messages a month, which is $0.05 a Gemini 3.8 Flash message if every message goes to Gemini 3.8 Flash.
A $10 top-up adds up to 200 Gemini 3.8 Flash messages, valid 12 months.
Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.
Gemini 3.8 Flash against the other Gemini models
Every Gemini model in llmwise beside Gemini 3.8 Flash, dearest first.
| Model | API, per 1M in / out | Input price against Gemini 3.8 Flash | Average reply in our runs | On Pro |
|---|---|---|---|---|
| Gemini 3.1 Pro (preview)Google | $2.00 / $12.00 | 2.7 times Gemini 3.8 Flash's | $0.0107 | Up to 125 a month |
| Gemini 3.8 FlashGoogleThis page | $0.75 / $3.75 | – | $0.0013 | Up to 250 a month |
Gemini 3.8 Flash's own page: Gemini 3.8 Flash: price, limits and messages on every plan. Gemini 3.8 Flash passed 46 of the 50 test prompts these costs come from.
Questions
How much does a Gemini 3.8 Flash message cost?
In our test runs, $0.0013 a reply on average through OpenRouter (median $0.00089), across 50 Gemini 3.8 Flash replies to our test prompts. At the API price a typical Gemini 3.8 Flash message of 4,000 tokens in and 700 out costs $0.0056; a long chat costs more, because every reply rereads it.
What is Gemini 3.8 Flash's API price?
$0.75 per million input tokens and $3.75 per million output tokens, as of September 2026 (Google's list price).
How many Gemini 3.8 Flash messages does llmwise Pro include?
Up to 250 Gemini 3.8 Flash messages a month on Pro ($20 a month), if the whole allowance goes to Gemini 3.8 Flash; the count on each plan is above.
Can I use Gemini 3.8 Flash for free?
Yes, to try: Gemini 3.8 Flash is in llmwise's one-time free trial of 5 messages.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.
See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.