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Claude Opus 5.5 (low) vs GPT-6 Astra (max)

GPT-6 Astra (max) leads on average score with 9.9 vs 9.3. Claude Opus 5.5 (low) has the lower benchmark cost at $0.952 vs $3.803. Claude Opus 5.5 (low) is faster at 23.72s vs 61.27s, with pass rates of 87.9% vs 95.5%.

Last updated at: 2026-09-23

Compared models

Rank
#20
Total Output Tokens
21,004
Response Time (avg)
23.72s
Total Cost
$0.952
Rank
#4
Total Output Tokens
60,230
Response Time (avg)
61.27s
Total Cost
$3.803
Recommended model Claude Opus 5.5 (low)

Its score stays close to the best score here (9.3 vs 9.9), while costing about 4.0x less than GPT-6 Astra (max).

Detailed comparison

Metric Claude Opus 5.5 Claude Opus 5.5 low Release: 2026-09-23 GPT-6 Astra GPT-6 Astra max Release: 2026-09-04
Score 9.3 9.9
Rank #20 #4
Reliability 10.0 9.5
Consistency 9.3 10.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 87.9% 95.5%
Flaky tests 2 0
Total Runs 66 66
Cost per result 5.284 18.106
Total Cost $0.952 $3.803
Input Price $4.000 / 1M $10.000 / 1M
Output Price $20.000 / 1M $50.000 / 1M
Total Input Tokens 132,746 79,058
Output Tokens 6,454 4,853
Reasoning Tokens 14,550 55,377
Response Time (avg) 23.72s 61.27s
Response Time (max) 89.16s 960.01s
Response Time (total) 521.82s 1347.96s
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.

#20 Claude Opus 5.5

low
Invalid SVG
Cost
$0.038
Time
19.1s
Tokens
2,010 tok

#4 GPT-6 Astra

max
Reached the allocated time limit (600 seconds) without receiving showcase output.
Cost
$0.000
Time
600.0s
Tokens
0 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 12.23s 10,608 575 2,777
GPT-6 Astra 10.0 10.0 100.0% 0 14.64s 7,302 395 8,298

Quick Compare

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