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Anthropic: Claude Fable 5 vs OpenAI: GPT-5.6 Sol

Summary

Claude Fable 5 (medium) vs GPT-5.6 Sol (high) benchmark comparison: GPT-5.6 Sol (high) leads on average score with 9.4 vs 9.2. GPT-5.6 Sol (high) has the lower benchmark cost at $0.821 vs $3.165. GPT-5.6 Sol (high) is faster at 10.56s vs 17.01s, with pass rates of 82.5% vs 88.9%.

Recommended model: GPT-5.6 Sol (high) - It has the best score here (9.4), while costing about 3.9x less than Claude Fable 5 (medium).

Last updated at: 2026-07-09

Metric Claude Fable 5 Claude Fable 5 medium Release: 2026-06-10 GPT-5.6 Sol GPT-5.6 Sol high Release: 2026-07-09
Score 9.2 9.4
Rank #9 #6
Reliability 10.0 10.0
Consistency 9.6 8.8
Tests Correct
Attempt pass rate 82.5% 88.9%
Flaky tests 1 3
Total Runs 63 63
Cost per result 18.614 4.824
Total Cost $3.165 $0.821
Input Price $10.000 / 1M $5.000 / 1M
Output Price $50.000 / 1M $30.000 / 1M
Total Input Tokens 58,383 34,114
Output Tokens 41,340 1,872
Reasoning Tokens 10,269 19,777
Response Time (avg) 17.01s 10.56s
Response Time (max) 80.80s 54.79s
Response Time (total) 357.17s 221.69s

Generation showcase

Hamster playing table tennis

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

#9 Claude Fable 5

medium
Cost
$0.606
Time
156.7s
Tokens
12,264 tok

#6 GPT-5.6 Sol

high
Cost
$0.151
Time
201.9s
Tokens
5,100 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 6.20s 834 530 402
GPT-5.6 Sol 8.7 7.9 91.7% 1 3.39s 606 171 644
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 15.59s 10,590 7,383 1,318
GPT-5.6 Sol 10.0 10.0 100.0% 0 12.52s 7,302 404 5,656
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 33.70s 20,937 2,353 1,599
GPT-5.6 Sol 10.0 10.0 100.0% 0 13.68s 11,019 315 1,599
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 7.18s 10,503 521 363
GPT-5.6 Sol 10.0 10.0 100.0% 0 1.16s 7,140 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 5.3 7.2 44.4% 1 53.40s 975 25,215 5,001
GPT-5.6 Sol 5.3 7.2 44.4% 1 39.45s 619 62 9,556
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 7.42s 708 366 144
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.40s 477 97 238
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 5.90s 909 139 202
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.73s 660 96 331
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 7.7 10.0 66.7% 0 5.18s 894 402 324
GPT-5.6 Sol 10.0 10.0 100.0% 0 4.10s 642 211 675
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 16.96s 11,775 729 344
GPT-5.6 Sol 10.0 10.0 100.0% 0 7.08s 5,454 264 393
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 3.0 10.0 0.0% 0 25.64s 258 3,702 572
GPT-5.6 Sol 4.7 1.6 66.7% 1 6.97s 195 30 685

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