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Claude Sonnet 5.5 (low) vs gpt-oss-120b (medium)

The average score is effectively tied at 6.2 vs 6.1. gpt-oss-120b (medium) has the lower benchmark cost at $0.020 vs $0.620. Claude Sonnet 5.5 (low) is faster at 5.68s vs 20.81s, with pass rates of 43.9% vs 50.0%.

Last updated at: 2026-09-29

Compared models

Rank
#232
Total Output Tokens
28,630
Response Time (avg)
5.68s
Total Cost
$0.620
Rank
#236
Total Output Tokens
98,282
Response Time (avg)
20.81s
Total Cost
$0.020
Recommended model gpt-oss-120b (medium)

It has the best score here (6.1), while costing about 32.6x less than Claude Sonnet 5.5 (low).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 low Release: 2026-09-29 gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05
Score 6.2 6.1
Rank #232 #236
Reliability 10.0 10.0
Consistency 9.4 8.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 43.9% 50.0%
Flaky tests 2 5
Total Runs 66 66
Cost per result 6.880 0.224
Total Cost $0.620 $0.020
Input Price $2.000 / 1M $0.037 / 1M
Output Price $10.000 / 1M $0.170 / 1M
Total Input Tokens 166,418 108,767
Output Tokens 21,456 29,378
Reasoning Tokens 7,174 68,904
Response Time (avg) 5.68s 20.81s
Response Time (max) 22.74s 68.16s
Response Time (total) 124.87s 332.88s
Parameters ~1T total (~100B active) 117B total (5.1B active)
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

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

#232 Claude Sonnet 5.5

low
Cost
$0.020
Time
15.3s
Tokens
2,077 tok

#236 gpt-oss-120b

medium
Cost
$0.001
Time
26.7s
Tokens
555 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5.5 3.2 9.7 0.0% 0 5.81s 10,608 5,903 0
gpt-oss-120b 5.9 7.0 55.6% 1 38.37s 7,782 3,365 11,973

Quick Compare

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