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VerdictPal · editorial desk · updated 16 Oct 2026VerdictPal
Compare · Two models, head-to-head

Pick two models. See the diff.

Composite scores, benchmark ranks, capability grids, and pricing per million tokens. All sourced from the same data that powers the model atlas.
ToolsModels

Gemini 3.8 Flash vs Claude Sonnet 5.5

Gemini 3.8 Flash3stats won
Tied1stats
Claude Sonnet 5.52stats won
Spec showdown

Capacity, price, freshness.

Gemini 3.8 FlashvsClaude Sonnet 5.5

Gemini 3.8 Flash dominates on composite score (73 vs 0), driven by broader benchmark coverage and stronger per-family performance. Gemini 3.8 Flash is more affordable at $0.75/1M input — about 3× cheaper than $2.0/1M.

  1. Composite score
    Gemini 3.8 Flash73Winner on this rowClaude Sonnet 5.50
  2. Benchmark mix
    Gemini 3.8 Flash73Winner on this rowClaude Sonnet 5.50
  3. Context window
    Gemini 3.8 Flash1MClaude Sonnet 5.51M
  4. Max output
    Gemini 3.8 Flash64KClaude Sonnet 5.5128KWinner on this row
  5. Input price / 1M (lower wins)
    Gemini 3.8 Flash$0.75Winner on this rowClaude Sonnet 5.5$2.0
  6. Output speed (AA default API)
    Gemini 3.8 Flash132 t/sClaude Sonnet 5.5135 t/sWinner on this row
Composite score
73Winner on this row
vs
0
Benchmark mix
73Winner on this row
vs
0
Context window
1M
vs
1M
Max output
64K
vs
128KWinner on this row
Input price / 1M (lower wins)
$0.75Winner on this row
vs
$2.0
Output speed (AA default API)
132 t/s
vs
135 t/sWinner on this row
Capability grid

What each model can do.

Modalities

Gemini 3.8 FlashClaude Sonnet 5.5
Text●●
Image●●
Audio●—
Video●—
Code●●
Tool use●●
Reasoning●●

Access

Gemini 3.8 FlashClaude Sonnet 5.5
API●●
Consumer app●●
Open weights——
Managed cloud●●
On-device——
Family profile

Top score per benchmark family.

No shared benchmark families between these two models.

Benchmark ranks

Every shared benchmark, side by side.

Performance

AA output speed#35/195 · #34/195
132 t/s
vs
135 t/sWinner on this row
Dossier facts

Dates, sources, fineprint.

Gemini 3.8 FlashClaude Sonnet 5.5
ProviderGoogleAnthropic
FamilyGemini 3.8Claude Sonnet
Release date2026-09-022026-09-28
Knowledge cutoff2026-03-01Jun 2026
Context window1M1M
Max output64K128K
Input price /1M$0.75$2.0
Output price /1M$3.8$10
Statusflagshipflagship
Composite score730
Intelligence score730
Intel sourcecompositenone
Benchmark rows61
Source count11
Freshnessfreshfresh
Pricing checked2026-09-182026-09-28
Ecosystem

Which tools wrap each model.

Verdict

Which model to actually pick.

Gemini 3.8 Flash dominates on composite score (73 vs 0), driven by broader benchmark coverage and stronger per-family performance. Gemini 3.8 Flash is more affordable at $0.75/1M input — about 3× cheaper than $2.0/1M.

Open Gemini 3.8 Flash's dossierOpen Claude Sonnet 5.5's dossier

Questions this comparison answers

Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.

Should you use Gemini 3.8 Flash or Claude Sonnet 5.5?

Gemini 3.8 Flash dominates on composite score (73 vs 0), driven by broader benchmark coverage and stronger per-family performance. Gemini 3.8 Flash is more affordable at $0.75/1M input — about 3× cheaper than $2.0/1M.

Is Gemini 3.8 Flash or Claude Sonnet 5.5 cheaper?

Gemini 3.8 Flash: $0.75 / $3.8. Claude Sonnet 5.5: $2.0 / $10.

How do the Gemini 3.8 Flash and Claude Sonnet 5.5 context windows compare?

Gemini 3.8 Flash: 1M. Claude Sonnet 5.5: 1M.