LLM Comparison

Claude Sonnet 5.5 vs Gemini 3.5 Flash-Lite: benchmark scores, pricing & comparison.

Side-by-side Claude Sonnet 5.5 vs Gemini 3.5 Flash-Lite 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 (#3 vs #59) and wins 6 of 6 shared benchmarks; Gemini 3.5 Flash-Lite costs less ($0.30/$2.50 vs $2.00/$10.0 per 1M tokens).

Open live leaderboardClaude Sonnet 5.5 model pageGemini 3.5 Flash-Lite model page
Rank #3 vs #59AskClash overall scores 77.7 vs 18.1.
Pricing $2.00/$10.0 vs $0.30/$2.50Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryAnthropic vs Google.

Claude Sonnet 5.5 vs Gemini 3.5 Flash-Lite benchmark comparison

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

MetricClaude Sonnet 5.5Gemini 3.5 Flash-Lite
Overall Score77.718.1
Leaderboard Rank#3#59
ACB76.6—
AA Intelligence Index56.036.0
AutomationBench-AA71.825.0
RWT—7.0
Coding Agent Index59.3—
HLE64.518.8
GPQA95.683.8
SWE-Pro81.354.2
SWE-Atlas64.2—
Terminal-Bench 4.063.6—
DeepSWE71.0—
GDPval-AA1837.81140.0
OSWorld—74.0
Finance Agent v2.167.3—
MMMU-Pro—79.0
MRCR—72.2
Input Price (per 1M tokens)$2.00$0.30
Output Price (per 1M tokens)$10.0$2.50
Context Window1M1M
Benchmarks Published138

Claude Sonnet 5.5 vs Gemini 3.5 Flash-Lite head-to-head charts

Claude Sonnet 5.5 leads 6 and Gemini 3.5 Flash-Lite leads 0 of 6 shared benchmarks. Gemini 3.5 Flash-Lite is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Claude Sonnet 5.5Gemini 3.5 Flash-Lite
Overall
77.7Claude Sonnet 5.5
18.1Gemini 3.5 Flash-Lite
AA Intelligence Index
56.0Claude Sonnet 5.5
36.0Gemini 3.5 Flash-Lite
AutomationBench-AA
71.8Claude Sonnet 5.5
25.0Gemini 3.5 Flash-Lite
HLE
64.5Claude Sonnet 5.5
18.8Gemini 3.5 Flash-Lite
GPQA
95.6Claude Sonnet 5.5
83.8Gemini 3.5 Flash-Lite
SWE-Pro
81.3Claude Sonnet 5.5
54.2Gemini 3.5 Flash-Lite
GDPval-AA
1837.8Claude Sonnet 5.5
1140.0Gemini 3.5 Flash-Lite
Claude Sonnet 5.5
Input$2.00
Output$10.0
Workload$4.00
Context1M
Gemini 3.5 Flash-Lite
Input$0.30
Output$2.50
Workload$0.80
Context1M

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

More Claude Sonnet 5.5 and Gemini 3.5 Flash-Lite comparisons

Explore how Claude Sonnet 5.5 and Gemini 3.5 Flash-Lite stack up against other top-ranked LLMs.

Claude Fable 5.2 vs Claude Sonnet 5.5Claude Fable 5.2 vs Gemini 3.5 Flash-LiteClaude Opus 5.5 vs Claude Sonnet 5.5Claude Opus 5.5 vs Gemini 3.5 Flash-LiteClaude Sonnet 5.5 vs Claude Fable 5.1Claude Fable 5.1 vs Gemini 3.5 Flash-LiteClaude Sonnet 5.5 vs Gemini 4 CarbonGemini 4 Carbon vs Gemini 3.5 Flash-LiteClaude Sonnet 5.5 vs Gemini 4 ArgonGemini 4 Argon vs Gemini 3.5 Flash-Lite

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.