tokevenClaudevsGemini
Claude Opus 4.8 vs Gemini 3.1 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 4.8
FlagshipGemini 3.1 Pro
Mid-tierInput $/MTok
$5.00
$2.00
Output $/MTok
$25.00
$12.00
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
86
Code Review
94
vs
84
Summarization
88
vs
87
Q&A
85
vs
87
Extraction
82
vs
85
Reasoning
97
vs
90
Classification
80
vs
86
Creative Writing
93
vs
84
Claude Opus 4.8
Gemini 3.1 Pro
Guidance
When to use Claude Opus 4.8 vs Gemini 3.1 Pro
Choose Claude Opus 4.8 when...
- -You need strong reasoning (confidence 97 vs 90)
- -You need strong code generation (confidence 95 vs 86)
- -You need strong code review (confidence 94 vs 84)
- -You need strong creative writing (confidence 93 vs 84)
Choose Gemini 3.1 Pro when...
- -You need strong q&a (confidence 87 vs 85)
- -You need strong classification (confidence 86 vs 80)
- -You need strong extraction (confidence 85 vs 82)
- -Cost matters: 60% 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 3.1 Pro
100K tokens
$1.10
$0.50Cheaper
1M tokens
$11.00
$5.00Cheaper
10M tokens
$110.00
$50.00Cheaper
FAQ
When should I use Claude Opus 4.8 instead of Gemini 3.1 Pro?
Claude Opus 4.8 outperforms Gemini 3.1 Pro for Reasoning, Code Generation, Code Review. It costs $5.00/$25.00 per million tokens (input/output).
Is Gemini 3.1 Pro cheaper than Claude Opus 4.8?
Yes. Gemini 3.1 Pro input costs $2.00/MTok vs $5.00/MTok for Claude Opus 4.8, saving 60% on input.
What are the context window sizes for Claude Opus 4.8 and Gemini 3.1 Pro?
Claude Opus 4.8 has a 200K token context window. Gemini 3.1 Pro 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.