Which model is better: Claude Opus 5 or GPT-5.6 Sol?

Claude Opus 5 is 37.5% cheaper for input tokens ($5.00 vs. $8.00 per 1M tokens) and $25.00 vs. $32.00 for output tokens (1.6x cost difference). In terms of operational performance, Claude Opus 5 delivers faster response latency with 340ms TTFT (80ms faster than GPT-5.6 Sol). Claude Opus 5 leads coding benchmarks at 82.4% SWE-bench vs. 79.5% for GPT-5.6 Sol.
Verified daily via automated API latency tests and official documentation.

Verified Performance & Unit Economics Delta

Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.

Metric / Dimension Claude Opus 5 GPT-5.6 Sol Net Delta / Advantage
Input Cost / 1M Tokens $5.00 $8.00 Claude Opus 5 is 1.6x cheaper
Output Cost / 1M Tokens $25.00 $32.00 Claude Opus 5 (21.9% lower)
Avg TTFT Response Latency 340ms 420ms Claude Opus 5 (+80ms faster)
SWE-bench Verified (Coding) 82.4% 79.5% Claude Opus 5 (+2.9% lead)
Inference Value Score (IVR) 42.7 / 100 35.3 / 100 Claude Opus 5 (+7.4 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model your expected production workload across prompt (input) and completion (output) tokens.

Live Calculation Engine
10.0M Tokens
100K 50M 250M 500M+
2.5M Tokens
100K 10M 50M 100M+

Estimated Monthly Spend

Claude Opus 5 $5.45

$5/1M in · $25/1M out

GPT-5.6 Sol $67.50

$8/1M in · $32/1M out

Projected Monthly Cost Reduction
$62.05 / mo
(91.9% lower cost)
A

When to Choose Claude Opus 5

Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.

B

When to Choose GPT-5.6 Sol

Choose GPT-5.6 Sol when you need High-order STEM research, autonomous enterprise executive workflow coordination, and heavy deep-reasoning pipelines. and prioritize OpenAI ecosystem integration at $8.00/1M tokens.

Related Questions & Decision Factors

Which is cheaper: Claude Opus 5 or GPT-5.6 Sol?

Claude Opus 5 is cheaper at $5.00/1M input tokens compared to $8.00/1M for GPT-5.6 Sol.

Which model has lower latency: Claude Opus 5 or GPT-5.6 Sol?

Claude Opus 5 delivers faster response times with an average TTFT of 340ms vs 420ms for GPT-5.6 Sol.

When should you choose Claude Opus 5?

Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.

When should you choose GPT-5.6 Sol?

Choose GPT-5.6 Sol when you need High-order STEM research, autonomous enterprise executive workflow coordination, and heavy deep-reasoning pipelines. and prioritize OpenAI ecosystem integration at $8.00/1M tokens.

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