tokevenClaudevsGemini
Claude Opus 4.8 vs Gemini 3.5 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 3.5 Flash
Fast / BudgetInput $/MTok
$5.00
$1.50
Output $/MTok
$25.00
$9.00
Cache discount
90% off
75% off
Context
200K
1,000K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
95
vs
68
Code Review
94
vs
65
Summarization
88
vs
85
Q&A
85
vs
84
Extraction
82
vs
90
Reasoning
97
vs
60
Classification
80
vs
92
Creative Writing
93
vs
55
Claude Opus 4.8
Gemini 3.5 Flash
Guidance
When to use Claude Opus 4.8 vs Gemini 3.5 Flash
Choose Claude Opus 4.8 when...
- -You need strong reasoning (confidence 97 vs 60)
- -You need strong code generation (confidence 95 vs 68)
- -You need strong code review (confidence 94 vs 65)
- -You need strong creative writing (confidence 93 vs 55)
Choose Gemini 3.5 Flash when...
- -You need strong classification (confidence 92 vs 80)
- -You need strong extraction (confidence 90 vs 82)
- -Cost matters: 70% cheaper on input tokens
- -You need a larger context window (1,000K vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
Gemini 3.5 Flash
100K tokens
$1.10
$0.38Cheaper
1M tokens
$11.00
$3.75Cheaper
10M tokens
$110.00
$37.50Cheaper
FAQ
When should I use Claude Opus 4.8 instead of Gemini 3.5 Flash?
Claude Opus 4.8 outperforms Gemini 3.5 Flash for Reasoning, Code Generation, Code Review. It costs $5.00/$25.00 per million tokens (input/output).
Is Gemini 3.5 Flash cheaper than Claude Opus 4.8?
Yes. Gemini 3.5 Flash input costs $1.50/MTok vs $5.00/MTok for Claude Opus 4.8, saving 70% on input.
What are the context window sizes for Claude Opus 4.8 and Gemini 3.5 Flash?
Claude Opus 4.8 has a 200K token context window. Gemini 3.5 Flash has a 1,000K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.