Which is better: Claude Sonnet 5.5 or GPT-6 Sol?

Verdict: Claude Sonnet 5.5 ranks higher (#6 vs #29) and wins 5 of 6 shared benchmarks. AskClash compares Claude Sonnet 5.5 and GPT-6 Sol side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, AskClash ACB, and context window so you can see which model wins on each benchmark.

How do Claude Sonnet 5.5 and GPT-6 Sol compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both Claude Sonnet 5.5 and GPT-6 Sol when publicly disclosed.

LLM Comparison

Claude Sonnet 5.5 vs GPT-6 Sol: benchmark scores, pricing & comparison.

Side-by-side Claude Sonnet 5.5 vs GPT-6 Sol comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Verdict: Claude Sonnet 5.5 ranks higher (#6 vs #29) and wins 5 of 6 shared benchmarks.

Open live leaderboard Claude Sonnet 5.5 model page GPT-6 Sol model page

Rank #6 vs #29AskClash overall scores 73.7 vs 58.8.

Pricing $2.00/$10.0 vs $2.00/$10.0Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryAnthropic vs OpenAI.

Claude Sonnet 5.5 vs GPT-6 Sol benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

Metric	Claude Sonnet 5.5	GPT-6 Sol
Overall Score	73.7	58.8
Leaderboard Rank	#6	#29
ACB	76.6	55.8
Coding Agent Index	—	56.7
HLE	64.5	47.9
SWE-Pro	81.3	—
SWE-Atlas	—	57.5
Terminal-Bench	83.2	83.2
DeepSWE	71.0	68.8
GDPval-AA	1844.2	1486.9
Finance Agent	58.1	49.0
MMMU-Pro	—	83.3
Input Price (per 1M tokens)	$2.00	$2.00
Output Price (per 1M tokens)	$10.0	$10.0
Context Window	1M	1.05M
Benchmarks Published	10	12

Claude Sonnet 5.5 vs GPT-6 Sol head-to-head charts

Claude Sonnet 5.5 leads 6 and GPT-6 Sol leads 0 of 7 shared benchmarks. Charts show only benchmarks both models publish.

Claude Sonnet 5.5GPT-6 Sol

Overall

73.7Claude Sonnet 5.5

58.8GPT-6 Sol

ACB

76.6Claude Sonnet 5.5

55.8GPT-6 Sol

HLE

64.5Claude Sonnet 5.5

47.9GPT-6 Sol

Terminal-Bench

83.2Claude Sonnet 5.5

83.2GPT-6 Sol

DeepSWE

71.0Claude Sonnet 5.5

68.8GPT-6 Sol

GDPval-AA

1844.2Claude Sonnet 5.5

1486.9GPT-6 Sol

Finance Agent

58.1Claude Sonnet 5.5

49.0GPT-6 Sol

Claude Sonnet 5.5

Input$2.00

Output$10.0

Workload$4.00

Context1M

GPT-6 Sol

Input$2.00

Output$10.0

Workload$4.00

Context1.05M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Claude Sonnet 5.5 and GPT-6 Sol comparisons

Explore how Claude Sonnet 5.5 and GPT-6 Sol stack up against other top-ranked LLMs.

Claude Fable 5.1 vs Claude Sonnet 5.5 Claude Fable 5.1 vs GPT-6 Sol Claude Opus 5.5 vs Claude Sonnet 5.5 Claude Opus 5.5 vs GPT-6 Sol Claude Fable 5 vs Claude Sonnet 5.5 Claude Fable 5 vs GPT-6 Sol Claude Opus 5 vs Claude Sonnet 5.5 Claude Opus 5 vs GPT-6 Sol GPT-5.6 Sol vs Claude Sonnet 5.5 GPT-5.6 Sol vs GPT-6 Sol

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.