tokevenClaudevsGemini
Claude Opus 4.8 vs Gemini 3 Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 4.8
FlagshipGemini 3 Flash
Fast / BudgetInput $/MTok
$5.00
$0.50
Output $/MTok
$25.00
$3.00
Cache discount
90% off
90% off
Context
1M
1.0M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
63
vs
65
Code Review
94
vs
62
Summarization
69
vs
83
Q&A
85
vs
82
Extraction
73
vs
86
Reasoning
89
vs
58
Classification
80
vs
88
Creative Writing
81
vs
52
Claude Opus 4.8
Gemini 3 Flash
Guidance
When to use Claude Opus 4.8 vs Gemini 3 Flash
Choose Claude Opus 4.8 when...
- -You need strong code review (confidence 94 vs 62)
- -You need strong reasoning (confidence 89 vs 58)
- -You need strong q&a (confidence 85 vs 82)
- -You need strong creative writing (confidence 81 vs 52)
Choose Gemini 3 Flash when...
- -You need strong classification (confidence 88 vs 80)
- -You need strong extraction (confidence 86 vs 73)
- -You need strong summarization (confidence 83 vs 69)
- -You need strong code generation (confidence 65 vs 63)
- -Cost matters: 90% cheaper on input tokens
- -You need a larger context window (1.0M vs 1M)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
Gemini 3 Flash
100K tokens
$1.10
$0.13Cheaper
1M tokens
$11.00
$1.25Cheaper
10M tokens
$110.00
$12.50Cheaper
FAQ
When should I use Claude Opus 4.8 instead of Gemini 3 Flash?
Claude Opus 4.8 outperforms Gemini 3 Flash for Code Review, Q&A, Reasoning. It costs $5.00/$25.00 per million tokens (input/output).
Is Gemini 3 Flash cheaper than Claude Opus 4.8?
Yes. Gemini 3 Flash input costs $0.50/MTok vs $5.00/MTok for Claude Opus 4.8, saving 90% on input.
What are the context window sizes for Claude Opus 4.8 and Gemini 3 Flash?
Claude Opus 4.8 has a 1M token context window. Gemini 3 Flash has a 1.0M token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Opus 4.8 and Gemini 3 Flash stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.