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GPT-5.3-Codex (medium) vs Particle-1 (low)

The average score is effectively tied at 9.1 vs 9.1. Particle-1 (low) has the lower benchmark cost at $0.134 vs $1.318. GPT-5.3-Codex (medium) is faster at 18.87s vs 18.93s, with pass rates of 84.1% vs 72.5%.

Last updated at: 2026-11-10

Compared models

Rank
#45
Total Output Tokens
66,287
Response Time (avg)
18.87s
Total Cost
$1.318
Rank
#53
Total Output Tokens
241,020
Response Time (avg)
18.93s
Total Cost
$0.134
Recommended model Particle-1 (low)

It has the best score here (9.1), while costing about 9.9x less than GPT-5.3-Codex (medium).

Detailed comparison

Metric GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05 Particle-1 Particle-1 low Release: 2026-10-28
Score 9.1 9.1
Rank #45 #53
Reliability 10.0 9.8
Consistency 8.6 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 84.1% 72.5%
Flaky tests 4 2
Total Runs 69 69
Cost per result 7.753 0.836
Total Cost $1.318 $0.134
Input Price $1.750 / 1M $0.050 / 1M
Output Price $14.000 / 1M $0.500 / 1M
Cache Read Price $0.175 / 1M $0.003 / 1M
Cache Write Price N/A N/A
Total Input Tokens 222,794 264,977
Output Tokens 7,357 6,605
Reasoning Tokens 58,930 234,415
Response Time (avg) 18.87s 18.93s
Response Time (max) 100.93s 173.97s
Response Time (total) 433.94s 435.48s
Parameters ~1.2T total (~80B active) ~748B total (~16B active)
Availability Closed Closed

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

Model generation showcase

Hamster playing table tennis

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

#45 GPT-5.3-Codex

medium
Cost
$0.049
Time
54.9s
Tokens
3,580 tok

#53 Particle-1

low
Cost
$0.006
Time
42.6s
Tokens
10,625 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
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890
Particle-1 10.0 10.0 100.0% 0 21.73s 7,986 315 34,150

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