LLM Comparison

Gemini 3.5 Flash vs Gemini 3.1 Pro: benchmark scores, pricing & comparison.

Side-by-side Gemini 3.5 Flash vs Gemini 3.1 Pro 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 3.5 Flash model pageGemini 3.1 Pro model page
Rank #22 vs #24AskClash overall scores 54.9 vs 51.9.
Pricing $1.50/$9.00 vs $2.00/$12.0Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryGoogle vs Google.

Gemini 3.5 Flash vs Gemini 3.1 Pro benchmark comparison

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

MetricGemini 3.5 FlashGemini 3.1 Pro
Overall Score54.951.9
Leaderboard Rank#22#24
RWT7.0—
Coding Agent Index—29.2
HLE40.251.4
GPQA92.294.3
IFEval76.3—
SWE-bench—80.6
SWE-Pro55.154.2
Terminal-Bench76.268.5
DeepSWE37.411.8
OSWorld78.4—
MCP Atlas83.669.2
Finance Agent57.943.0
CharXiv84.280.2
MMMU-Pro83.683.9
ARC-AGI 272.177.1
Tau295.399.3
MRCR77.384.9
Input Price (per 1M tokens)$1.50$2.00
Output Price (per 1M tokens)$9.00$12.0
Context Window1M1M
Benchmarks Published1516

Gemini 3.5 Flash vs Gemini 3.1 Pro head-to-head charts

Gemini 3.5 Flash leads 7 and Gemini 3.1 Pro leads 6 of 13 shared benchmarks. Gemini 3.5 Flash is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Gemini 3.5 FlashGemini 3.1 Pro
Overall
54.9Gemini 3.5 Flash
51.9Gemini 3.1 Pro
HLE
40.2Gemini 3.5 Flash
51.4Gemini 3.1 Pro
GPQA
92.2Gemini 3.5 Flash
94.3Gemini 3.1 Pro
SWE-Pro
55.1Gemini 3.5 Flash
54.2Gemini 3.1 Pro
Terminal-Bench
76.2Gemini 3.5 Flash
68.5Gemini 3.1 Pro
DeepSWE
37.4Gemini 3.5 Flash
11.8Gemini 3.1 Pro
MCP Atlas
83.6Gemini 3.5 Flash
69.2Gemini 3.1 Pro
Finance Agent
57.9Gemini 3.5 Flash
43.0Gemini 3.1 Pro
CharXiv
84.2Gemini 3.5 Flash
80.2Gemini 3.1 Pro
MMMU-Pro
83.6Gemini 3.5 Flash
83.9Gemini 3.1 Pro
ARC-AGI 2
72.1Gemini 3.5 Flash
77.1Gemini 3.1 Pro
Tau2
95.3Gemini 3.5 Flash
99.3Gemini 3.1 Pro
Gemini 3.5 Flash
Input$1.50
Output$9.00
Workload$3.30
Context1M
Gemini 3.1 Pro
Input$2.00
Output$12.0
Workload$4.40
Context1M

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

More Gemini 3.5 Flash and Gemini 3.1 Pro comparisons

Explore how Gemini 3.5 Flash and Gemini 3.1 Pro 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.