Claude Opus 4.8 vs GPT-5.5 Pro
Input price
$5.00
$30.00
Output price
$25.00
$180.00
Context window
1000K
1050K
Throughput
158 tok/s
139 tok/s
Availability
100.0%
100.0%
Cost / task
$0.023
$0.150
Efficiency score
84
82
Estimated monthly cost by workload
Metric
CLAUDE-OPUS-4.
GPT-5.5-PRO
Chat assistant
$4,500
$30,600
RAG / long context
$8,250
$52,200
Agent / tool use
$12,600
$86,400
Efficiency score: Claude Opus 4.8
Across price, speed and reliability, Claude Opus 4.8 offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.
Figures are illustrative demo data, not financial advice.
Frequently asked questions
Is Claude Opus 4.8 or GPT-5.5 Pro cheaper?+
Claude Opus 4.8 has the lower input price — $5.00 vs $30.00 per 1M tokens — so for most blended workloads it is the more cost-effective of the two. Figures are illustrative demo data.
Which should I choose, Claude Opus 4.8 or GPT-5.5 Pro?+
Across price, speed and reliability, Claude Opus 4.8 offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.