WhichAI.todayAbout

Best AI model for speed and high volume right now

Updated Oct 24, 2026. Checked daily.

#1 since Oct 23, 2026. No earlier leader is on record.

The fastest output of any tracked model, with a free API tier for prototyping. These picks are readable without an account, and the details behind each one are on the card.

#1 Champion

Gemini 3.5 Flash-Lite

Google

Google AI Studio free tier, or the Gemini app, choose Gemini 3.5 Flash-Lite.

Free (limited)

Leads Artificial Analysis output speed

The fastest output of any tracked model, with a free API tier for prototyping.

Artificial Analysis output speed 412 tokens/sec (Oct 2026).

Open Google
Details
Why it leads
Artificial Analysis output speed 412 tokens/sec (Oct 2026). Source.
Cost
Free API tier with rate limits. Paid API is $0.30 per million input tokens and $2.50 per million output.
Free tier
Yes. Free API use can be used to improve Google products. The paid API tier is not.
Privacy default
Yes for adults. Gemini Apps Activity is on by default, and those chats can be used to improve Google AI. Gemini Apps Activity, turn off Keep Activity. Safety review can still apply. Source
When not to use it
Skip it for hard coding, legal reading, or anything where a miss is expensive.
Starter prompt
Classify each of these support messages as billing, bug, or other, one label per line.

Top Alternative

Claude Haiku 5.5

Anthropic

Claude app, free plan includes Haiku 5.5.

Free (limited)

Very fast while staying far smarter than most budget models, at a $0.10 per million token input price.

Artificial Analysis output speed 237 tokens/sec.

Open Anthropic
Details
Why it leads
Artificial Analysis output speed 237 tokens/sec. Source.
Cost
Included on the free plan, with limits. API is $0.10 per million input tokens for prompts under 100K tokens.
Free tier
Yes, on the free Claude plan, with usage limits.
Privacy default
Anthropic says Free, Pro, and Max chats are used for training only if you allow it, and you choose at signup. The toggle has been reported as on by default, so check it. Settings, then Privacy. Turn off Help improve Claude. Source
When not to use it
Skip it when the task is hard enough that Opus or Fable would change the answer.
Starter prompt
Reply to this customer in two sentences. Be specific and do not over-promise.

Best Open Source

DeepSeek V4.1 Flash

DeepSeek

DeepSeek chat is free. Choose V4.1 Flash, or download weights on Hugging Face.

Free (limited)

Fast, extremely cheap, MIT-licensed, and the smartest model in the budget tier.

Artificial Analysis output speed not cited. AA Intelligence Index 45.

Open DeepSeek
Details
Why it leads
Artificial Analysis output speed not cited. AA Intelligence Index 45. Source.
Cost
Chat is free. The API costs a fraction of a dollar per million tokens, with 50% discounts off-peak.
Free tier
Yes. The chat site and app are free, with throttling when the service is busy.
Privacy default
Possibly. DeepSeek says some optimization data can come from user input, after de-identification. Use the opt-out described in the DeepSeek privacy policy. Source
When not to use it
Skip the hosted chat for private data. The weights can be run on your own machines.
Starter prompt
Tag each row as yes or no, and keep the output to a single column.

Email

One email when a leader changes. Buttondown is the only service that holds the address, and it uses it only to send these alerts. Open and click tracking stay off. Privacy

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Leader history

A new number one has to show up on two daily checks before it replaces the current leader. Get alerts.

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Source: WhichAI.today, Speed leader as of Oct 24, 2026, whichai.today/speed

Questions

Which AI is best for speed & high volume right now?

Gemini 3.5 Flash-Lite from Google leads, as of Oct 24, 2026. The fastest output of any tracked model, with a free API tier for prototyping. The alternative is Claude Haiku 5.5, and the open-weights pick is DeepSeek V4.1 Flash.

Where do I get Gemini 3.5 Flash-Lite?

Google AI Studio free tier, or the Gemini app, choose Gemini 3.5 Flash-Lite. Free API tier with rate limits. Paid API is $0.30 per million input tokens and $2.50 per million output.

Has this leader changed?

Tracking for this category began on Oct 23, 2026, with Gemini 3.5 Flash-Lite as the first recorded leader.

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