Claude Opus 4.8 vs GPT-5.3 Chat
Input price
$5.00
$1.75
Output price
$25.00
$14.00
Context window
1000K
128K
Throughput
158 tok/s
152 tok/s
Availability
100.0%
100.0%
Cost / task
$0.023
$0.011
Efficiency score
84
83
Estimated monthly cost by workload
Metric
CLAUDE-OPUS-4.
GPT-5.3-CHAT
Chat assistant
$4,500
$2,205
RAG / long context
$8,250
$3,360
Agent / tool use
$12,600
$6,300
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-5.3 Chat cheaper?+
GPT-5.3 Chat has the lower input price — $1.75 vs $5.00 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-5.3 Chat?+
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.