GPT-6.1 Terra Max vs Kimi K3.1 Pro: latency, speed and cost

GPT-6.1 Terra Max leads the intelligence index 51.3 to 46.5. GPT-6.1 Terra Max costs 50% less on blended price. See token costs, speed and which to pick.

Metric	GPT-6.1 Terra (Max)	Kimi K3.1 Pro
Intelligence Index	51.3	46.5
Input price (per 1M tokens)	$1.00	$2.00
Output price (per 1M tokens)	$5.00	$10.00
Output speed (tokens/s)	114	27
Time to first token	6.2 min	3.0s
Release date	2026-10-26	2026-10-23

Metric

GPT-6.1 Terra (Max)

Kimi K3.1 Pro

Intelligence Index

51.3

46.5

Input price (per 1M tokens)

$1.00

$2.00

Output price (per 1M tokens)

$5.00

$10.00

Output speed (tokens/s)

114

Time to first token

6.2 min

3.0s

Release date

2026-10-26

2026-10-23

Choosing between GPT-6.1 Terra (Max) and Kimi K3.1 Pro also means choosing between OpenAI and Kimi. All numbers are the catalogue's recorded values; nobody ran either model by hand for this page. Kimi K3.1 Pro starts answering far sooner, with a time to first token of 3.0 seconds compared with 6.2 minutes for GPT-6.1 Terra Max.

Throughput and time to first token

Measured output speed is 114 tokens per second for GPT-6.1 Terra Max and 27 tokens per second for Kimi K3.1 Pro. GPT-6.1 Terra Max is ahead by 323% on throughput. The wait for the first token averages 6.2 minutes on GPT-6.1 Terra Max against 3.0 seconds on Kimi K3.1 Pro. The faster writer, GPT-6.1 Terra Max, gives away too much at the start to win on time: counting the first-token wait, Kimi K3.1 Pro finishes first for any reply shorter than about 13,000 tokens. Waits that long are felt on every chat-style request, though they matter less for batch jobs.

Add the two numbers up for a 1,500-token reply and Kimi K3.1 Pro finishes first: 6.4 minutes for GPT-6.1 Terra Max, 59 seconds for Kimi K3.1 Pro.

Price per token

Per million tokens, GPT-6.1 Terra Max charges $1.00 for input and $5.00 for output, while Kimi K3.1 Pro charges $2.00 and $10.00. For output tokens, Kimi K3.1 Pro is twice the price of GPT-6.1 Terra Max.

Take 1 million input tokens and 200,000 output tokens: that comes to $2.00 on GPT-6.1 Terra Max and $4.00 on Kimi K3.1 Pro. Scale it up to classifying 100,000 short messages at 150 input tokens and 5 output tokens each and the bill is $17.50 for GPT-6.1 Terra Max against $35.00 for Kimi K3.1 Pro. On a 3:1 blend of input to output tokens, that works out to $2.00 versus $4.00 per million.

Release timing

GPT-6.1 Terra Max arrived on October 26, 2026, 3 days after Kimi K3.1 Pro (October 23, 2026). That is close enough to count them as the same generation.

GPT-6.1 Terra Max leads on the intelligence index

The catalogue puts GPT-6.1 Terra Max at 51.3 and Kimi K3.1 Pro at 46.5 on its intelligence index. That is a clear margin for an index that averages many evaluations.

Across the 109 active models with an intelligence score in the catalogue, GPT-6.1 Terra Max ranks 14th and Kimi K3.1 Pro ranks 23rd.

For coding or maths work specifically, the catalogue has no dedicated index on either side yet.

Cost per point of intelligence

A blunt value measure, blended price over intelligence score, puts GPT-6.1 Terra Max at $0.039 and Kimi K3.1 Pro at $0.086 per point. GPT-6.1 Terra Max scores higher and costs less per point, so on price per point there is nothing to trade off.

Frequently asked questions

Is Kimi K3.1 Pro better than GPT-6.1 Terra Max?

Not across the board: GPT-6.1 Terra Max scores higher on the intelligence index, 51.3 to 46.5; GPT-6.1 Terra Max is 50% cheaper on blended price; GPT-6.1 Terra Max streams output 4.2 times as fast; and Kimi K3.1 Pro reaches its first token sooner.

Is Kimi K3.1 Pro cheaper than GPT-6.1 Terra Max?

GPT-6.1 Terra Max is cheaper on a blended basis. GPT-6.1 Terra Max lists $1.00 per million input tokens and $5.00 per million output tokens; Kimi K3.1 Pro lists $2.00 and $10.00. For 1 million input and 200,000 output tokens that is $2.00 against $4.00.

Which is newer, GPT-6.1 Terra Max or Kimi K3.1 Pro?

GPT-6.1 Terra Max is newer. It was released on October 26, 2026, 3 days after Kimi K3.1 Pro (October 23, 2026).

Where do these numbers come from?

The figures are the recorded benchmark, price and speed data in Franklin AI's model catalogue. This page is written from that data automatically; neither model was tested by hand for it.

Does GPT-6.1 Terra Max respond faster than Kimi K3.1 Pro?

GPT-6.1 Terra Max generates output faster, at 114 tokens per second against 27 tokens per second. Kimi K3.1 Pro reaches its first token sooner (3.0 seconds against 6.2 minutes). Counting the first-token wait, Kimi K3.1 Pro finishes first for any reply shorter than about 13,000 tokens.

Final whistle

In one line: Kimi K3.1 Pro is the stronger all-round pick on this data, while GPT-6.1 Terra Max makes sense in narrower cases. Pick GPT-6.1 Terra Max if you need the higher overall score (51.3 against 46.5) and cost matters ($5.00 against $10.00 per million output tokens). Pick Kimi K3.1 Pro if users are waiting on the first word and replies need to finish sooner at typical lengths.

Where the numbers come from

The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the GPT-6.1 Terra (Max) and Kimi K3.1 Pro pages. The AI Benchmark methodology explains how that data is collected and shown.