Noometry

Model comparison

Gemini 3.8 Flash vs Sonar Pro

Gemini 3.8 Flash has enough public results to be ranked (#13); Sonar Pro does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

Gemini 3.8 Flash Google

59.5

Rank #13 Confirmed

Sonar Pro Perplexity

—

Unranked

Summary

  • Gemini 3.8 Flash is cheaper at $0.75 / $3.75 per million input/output tokens, against $3 / $15 for Sonar Pro.
  • Gemini 3.8 Flash accepts more context: 1.05M tokens versus 200K.

Side by side

Gemini 3.8 FlashSonar Pro
ProviderGooglePerplexity
Noometry Index59.5—
Released2026-09-022024-01-01
WeightsProprietaryProprietary
Context window1.05M200K
Max output66K8K
Input $ / M tokens$0.75$3
Output $ / M tokens$3.75$15
Results tracked461

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Category by category

Coding Not comparable

Gemini 3.8 Flash: 56.4 (#17), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
DeepSWE73.8%—
FrontierCode41.2%—
CursorBench39.6%—
LMArena WebDev1581—
FrontierSWE19.6%—
SciCode56.6%—
LMArena Coding1512—
ALE-Bench1,270—

Agentic & Tool Use Not comparable

Gemini 3.8 Flash: 40.3 (#22), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
APEX-Agents64.3%—
GDP.pdf23.4%—
LMArena Search—1130
Vending-Bench 25,094—

Reasoning Not comparable

Gemini 3.8 Flash: 64.7 (#13), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
NYT Connections (extended)97.4%—
CritPt18.3%—
Chess Puzzles61%—
LMArena Hard Prompts1506—
Mystery Game Puzzles47%—
DTBench95.7%—
LMCA52.9%—
Surface Evolver Bench76.9%—
Epoch Capabilities Index157.13—

Math Not comparable

Gemini 3.8 Flash: 65.2 (#22), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
FrontierMath (Tiers 1-3)68.4%—
FrontierMath Tier 422%—
OTIS Mock AIME 2024-202598.9%—
ProofBench48%—
LMArena Math1528—

Knowledge Not comparable

Gemini 3.8 Flash: 74.9 (#2), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
GPQA Diamond95.4%—
Humanity's Last Exam44.5%—
SimpleQA Verified69.7%—
LMArena Expert1529—

Multimodal Not comparable

Gemini 3.8 Flash: 40.9 (#33), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
LMArena Vision1312—
Blueprint-Bench 238.6%—
Furniture Assembly31.7%—

Multilingual Not comparable

Gemini 3.8 Flash: 57.9 (#5), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
LMArena Non-English1486—
LMArena Chinese1547—
LMArena French1502—
LMArena German1470—
LMArena Japanese1505—
LMArena Korean1479—
LMArena Russian1507—
LMArena Spanish1492—

Instruction Following Not comparable

Gemini 3.8 Flash: 78.2 (#11), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
LMArena Instruction Following1489—

Long Context Not comparable

Gemini 3.8 Flash: 46.2 (#23), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
LMArena Longer Query1506—

Writing & Preference Not comparable

Gemini 3.8 Flash: 72.1 (#16), Sonar Pro: —

BenchmarkGemini 3.8 FlashSonar Pro
LMArena Text1494—
LMArena Creative Writing1485—
EQ-Bench Creative Writing1748—
LMArena Multi-Turn1503—

Frequently asked questions

Is Gemini 3.8 Flash better than Sonar Pro?

Gemini 3.8 Flash has enough public results to be ranked (#13); Sonar Pro does not yet, so treat this comparison as directional.

Which is cheaper, Gemini 3.8 Flash or Sonar Pro?

Gemini 3.8 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; Sonar Pro lists at $3 and $15.

Which has the bigger context window?

Gemini 3.8 Flash does, with 1.05M tokens against 200K.

How many benchmarks do Gemini 3.8 Flash and Sonar Pro share?

0 benchmarks have published results for both models. Gemini 3.8 Flash has 46 scored results on Noometry and Sonar Pro has 1.

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