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Compared models

GPT-6 Astra (high) vs Gemini 3.8 Flash (high) vs Claude Fable 5.1 (high) benchmark comparison: Gemini 3.8 Flash (high) leads on Score with 9.9. Gemini 3.8 Flash (high) leads on Reliability with 10.0. Gemini 3.8 Flash (high) has the lowest Total Cost at $1.927. Claude Fable 5.1 (high) is fastest at 13.30s.

Last updated at: 2026-10-19

Compared models

Rank
#7
Total Output Tokens
55,595
Response Time (avg)
20.16s
Total Cost
$4.458
Rank
#2
Total Output Tokens
446,728
Response Time (avg)
40.60s
Total Cost
$1.927
Rank
#118
Total Output Tokens
40,466
Response Time (avg)
13.30s
Total Cost
$3.471
Recommended model Gemini 3.8 Flash (high)

It has the best score here (9.9), while costing about 2.1x less than the other models in this comparison.

Detailed comparison

Metric GPT-6 Astra GPT-6 Astra high Release: 2026-09-04 Gemini 3.8 Flash Gemini 3.8 Flash high Release: 2026-09-02 Claude Fable 5.1 Claude Fable 5.1 high Release: 2026-09-02
Score 9.9 9.9 7.9
Rank #7 #2 #118
Reliability 9.9 10.0 10.0
Consistency 9.6 9.6 9.7
Attempts 69/69 69/69 69/69
Tests Correct
Attempt pass rate 97.1% 98.6% 85.5%
Flaky tests 1 1 1
Total Runs 69 69 69
Cost per result 20.263 8.756 18.264
Total Cost $4.458 $1.927 $3.471
Input Price $10.000 / 1M $0.750 / 1M $10.000 / 1M
Output Price $50.000 / 1M $3.750 / 1M $50.000 / 1M
Cache Read Price $1.000 / 1M $0.075 / 1M $0.250 / 1M
Cache Write Price $12.500 / 1M $0.042 / 1M $12.500 / 1M
Total Input Tokens 167,805 334,568 144,676
Output Tokens 5,651 11,394 8,184
Reasoning Tokens 49,944 435,334 32,282
Response Time (avg) 20.16s 40.60s 13.30s
Response Time (max) 254.93s 177.08s 40.17s
Response Time (total) 463.68s 933.73s 305.83s
Parameters ~2T total (~150B active) ~500B total (~20B active) ~9.5T total (~878B active)
Availability Closed 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.

#7 GPT-6 Astra

high
Cost
$0.457
Time
176.7s
Tokens
9,218 tok

#2 Gemini 3.8 Flash

high
Cost
$0.077
Time
129.1s
Tokens
20,373 tok

#118 Claude Fable 5.1

high
Cost
$0.384
Time
102.5s
Tokens
7,824 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-6 Astra 10.0 10.0 100.0% 0 5.86s 7,302 392 2,387
Gemini 3.8 Flash 10.0 10.0 100.0% 0 29.30s 8,118 462 50,196
Claude Fable 5.1 8.4 7.4 88.9% 1 13.91s 10,608 520 6,503

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