Compare · ModelsLive · 2 picked · head to head
Claude Opus 5 vs Step 3.5 Flash
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Step 3.5 Flash wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · Claude Opus 5 · Step 3.5 Flash are still filling in scores.
Hype vs Reality
Attention vs performance
Claude Opus 5
#21 by perf·#6 by attention
Step 3.5 Flash
#8 by perf·no signal
Best value
Step 3.5 Flash
83.1x better value than Claude Opus 5
Claude Opus 5
4.6 pts/$
$15.00/M
Step 3.5 Flash
384.5 pts/$
$0.20/M
Vendor risk
Mixed exposure
One or more vendors flagged
Anthropic
$965.0B·Tier 1
StepFun
$5.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $5.00 | $25.00 | 1.0M tokens (~500 books) | $100.00 | |
| $0.10 | $0.30 | 262K tokens (~131 books) | $1.50 |