Navigate
Advertise here

Claude Opus 5.5 (high) vs GPT-6 Astra (medium)

GPT-6 Astra (medium) leads on average score with 9.4 vs 9.3. Claude Opus 5.5 (high) has the lower benchmark cost at $1.266 vs $1.774. GPT-6 Astra (medium) is faster at 8.08s vs 25.88s, with pass rates of 86.4% vs 90.9%.

Last updated at: 2026-09-23

Compared models

Rank
#21
Total Output Tokens
36,457
Response Time (avg)
25.88s
Total Cost
$1.266
Rank
#16
Total Output Tokens
19,627
Response Time (avg)
8.08s
Total Cost
$1.774
Recommended model GPT-6 Astra (medium)

It has the best score here (9.4), while responding about 3.2x faster than Claude Opus 5.5 (high).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 high Release: 2026-09-23 GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04
Score 9.3 9.4
Rank #21 #16
Reliability 10.0 9.9
Consistency 9.3 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 86.4% 90.9%
Flaky tests 2 2
Total Runs 66 66
Cost per result 7.029 9.337
Total Cost $1.266 $1.774
Input Price $4.000 / 1M $10.000 / 1M
Output Price $20.000 / 1M $50.000 / 1M
Total Input Tokens 134,020 79,264
Output Tokens 7,237 4,789
Reasoning Tokens 29,220 14,838
Response Time (avg) 25.88s 8.08s
Response Time (max) 95.95s 73.48s
Response Time (total) 569.33s 177.70s
Parameters ~5T total (~500B active) ~2T total (~150B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#21 Claude Opus 5.5

high
Cost
$0.136
Time
75.6s
Tokens
6,934 tok

#16 GPT-6 Astra

medium
Cost
$0.231
Time
81.0s
Tokens
4,708 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 Opus 5.5 10.0 10.0 100.0% 0 13.44s 10,608 584 5,042
GPT-6 Astra 10.0 10.0 100.0% 0 4.95s 7,302 394 1,673

Quick Compare

Switch Comparison Pair