LLM Comparison

Gemini 3.8 Flash vs Claude Opus 5.5: benchmark scores, pricing & comparison.

Side-by-side Gemini 3.8 Flash vs Claude Opus 5.5 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.

Open live leaderboardGemini 3.8 Flash model pageClaude Opus 5.5 model page
Rank #10 vs #12AskClash overall scores 65.6 vs 64.5.
Pricing $1.50/$7.50 vs $4.00/$20.0Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryGoogle vs Anthropic.

Gemini 3.8 Flash vs Claude Opus 5.5 benchmark comparison

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

MetricGemini 3.8 FlashClaude Opus 5.5
Overall Score65.664.5
Leaderboard Rank#10#12
ACB61.161.7
Coding Agent Index41.9—
HLE54.967.7
GPQA95.3—
SWE-Pro—89.9
SWE-Atlas45.2—
Terminal-Bench89.4—
DeepSWE73.874.2
GDPval-AA1545.01846.2
Finance Agent61.4—
CharXiv86.2—
MMMU-Pro85.687.7
Input Price (per 1M tokens)$1.50$4.00
Output Price (per 1M tokens)$7.50$20.0
Context Window1M1M
Benchmarks Published127

Gemini 3.8 Flash vs Claude Opus 5.5 head-to-head charts

Gemini 3.8 Flash leads 1 and Claude Opus 5.5 leads 5 of 6 shared benchmarks. Gemini 3.8 Flash is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Gemini 3.8 FlashClaude Opus 5.5
Overall
65.6Gemini 3.8 Flash
64.5Claude Opus 5.5
ACB
61.1Gemini 3.8 Flash
61.7Claude Opus 5.5
HLE
54.9Gemini 3.8 Flash
67.7Claude Opus 5.5
DeepSWE
73.8Gemini 3.8 Flash
74.2Claude Opus 5.5
GDPval-AA
1545.0Gemini 3.8 Flash
1846.2Claude Opus 5.5
MMMU-Pro
85.6Gemini 3.8 Flash
87.7Claude Opus 5.5
Gemini 3.8 Flash
Input$1.50
Output$7.50
Workload$3.00
Context1M
Claude Opus 5.5
Input$4.00
Output$20.0
Workload$8.00
Context1M

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

More Gemini 3.8 Flash and Claude Opus 5.5 comparisons

Explore how Gemini 3.8 Flash and Claude Opus 5.5 stack up against other top-ranked LLMs.

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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.