GPT-5.1 (Thinking, Medium): benchmark scores, price and ranking

GPT-5.1 (Thinking, Medium) from OpenAI ranks #402 of 743 LLMs on the LLMs Tiger aggregate benchmark score (47.8), based on 1 benchmark results captured up to 2026-10-13.

Organisation: OpenAI
Type: Frontier model
Open weights: No
Cheapest API price: $1.25 in / $10.00 out per million tokens (via azure, observed 2026-10-13T20:47Z)
Aggregate rank: #402 of 743 (score 47.8)

Across the 1 benchmark where at least ten models are scored, GPT-5.1 (Thinking, Medium) is in the top 10% on 0 and in the top half on 0.

Its cheapest listed input price, $1.25 per million tokens, is lower than that of 26% of the 427 models with a listed price.

GPT-5.1 (Thinking, Medium) benchmark results

GPT-5.1 (Thinking, Medium) benchmark scores, ranked against all models measured on each benchmark
Benchmark	Score	Rank	Source	Captured
ARC-AGI-2	6.5%	#52 of 87	ARC Prize official leaderboard	2026-10-13

About GPT-5.1 (Thinking, Medium)

GPT-5.1 (Thinking, Medium) is a frontier model from OpenAI. The cheapest API listing we track charges $1.25 per million input tokens and $10.00 per million output tokens, through azure. We hold 1 benchmark result for it across 1 area, and none is in the top tenth of its board.

Where GPT-5.1 (Thinking, Medium) stands

On our aggregate score, GPT-5.1 (Thinking, Medium) is #402 of 743 ranked models, around the middle of the table. Its score is 47.8; the scale is centred on 50, so it sits 2.2 points below the typical model. That beats 46% of the ranked field. Among the 88 ranked OpenAI models it is #50. The next one up is o1 (high) at 48.1. The next one down is GPT-5.5 Instant at 47.6.

GPT-5.1 (Thinking, Medium), benchmark by benchmark

GPT-5.1 (Thinking, Medium) lands below the middle on ARC-AGI-2: 6.5%, #52 of 87, with 59% of the field scoring higher. GPT-6 Astra (max) leads at 95.0%; the closest result above is Opus 4.5 (Thinking, None) at 7.8%. It covers abstract reasoning, ARC Prize public eval set. The board median is 22.8%, so GPT-5.1 (Thinking, Medium) is 16.2 points below it. Source: ARC Prize official leaderboard, captured 2026-10-13.

Price and value

The median input price across the 427 priced models is $0.500 per million tokens, so GPT-5.1 (Thinking, Medium) costs more than the typical listing. Models that score within 1.5 points or better and cost less: Qwen2.5-Coder-7B-Instruct ($0.010, 49.5), DeepSeek V4.1 Flash (high) ($0.010, 48.9), Qwen2.5-Coder-3B-Instruct ($0.010, 46.5). Similar scores cost more on Codex Mini (Latest) ($1.50) and Magistral Medium ($1.50).

Reading these numbers

The 1 score on this page comes from 1 source: ARC Prize official leaderboard (1). 1 of them come from an official leaderboard and 0 from datasets or third-party runs. With 1 results the aggregate rank can move a lot when one new score arrives.

Models ranked nearby

#399 glm-4p7 (47.9)
#400 gemini-2.0-flash-thinking-exp-01-21 (47.9)
#401 Kimi K2 Thinking (47.8)
#403 Tiny Recursion Model (TRM) (47.8)
#404 DeepSeek-V2-Chat (47.8)
#405 Muse Code + Muse Spark 1.3 (47.8)