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#17

GPT-6.1 Terra

OpenAI Release: 2026-10-26 Tested on: 2026-10-26 22:24 openai/gpt-6.1-terra::medium
~1T total (~60B active)MoEClosedEstimated
(max) (xhigh) (high) (medium) (low) (none)

Summary

GPT-6.1 Terra scores 9.6 on AI BENCHY and ranks #17. It has 10.0 reliability, a 91.3% pass rate, $0.291 total cost, and 7.99s average response time.

What makes GPT-6.1 Terra unique: Its total benchmark cost is unusually low for its score range.

Model facts

Researched on 2026-10-26

Estimated
Parameters
~1T total (~60B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. OpenAI does not disclose this checkpoint’s parameter counts or architecture. The low-confidence estimates carry forward the previous GPT-5.6 Terra catalog entry; the vendor announcement establishes identity and API availability, not those estimates.

Parameter source Availability source

Score

9.6

Consistency

9.4

Reliability

10.0

Total Cost (Current Price)

$0.291

Total Output Tokens

24,483

Total Input Tokens

167,830

Input Price

$1.000 / 1M

Output Price

$5.000 / 1M

Cache Read Price

$0.050 / 1M

Cache Write Price

$1.250 / 1M

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 3

Attempt pass rate: 91.3%

Flaky tests

2

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

7.99s

Response Time (max): 44.91s

Response Time (total): 183.79s

Wrong answer: 2 Did not follow instructions: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#17 GPT-6.1 Terra

medium
Cost
$0.018
Time
39.1s
Tokens
3,537 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 10.0 10.0
Coding 10.0 10.0
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 7.7 10.0
General Intelligence 10.0 10.0
Instructions following 8.0 6.8
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 4.7 1.6

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