Claude Opus 5 vs Gemini 3.5 Flash: Release Comparison
Comparison of the Claude Opus 5 and Gemini 3.5 Flash releases: 5 and 3 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.
- For intelligence, Claude Opus 5 scores highest: Claude Opus 5 (Adaptive Reasoning, Max Effort) at 51, against Gemini 3.5 Flash (medium) at 34 for Gemini 3.5 Flash.
- For output speed, Gemini 3.5 Flash is fastest: Gemini 3.5 Flash (medium) at 217 t/s, against Claude Opus 5 (Adaptive Reasoning, Max Effort) at 52 t/s for Claude Opus 5.
- For cost per task, Claude Opus 5 is cheapest: Claude Opus 5 (Adaptive Reasoning, Low Effort) at $1.10, against Gemini 3.5 Flash (high) at $1.56 for Gemini 3.5 Flash.
Releases compared
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench v4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better
Further details
Weights | Provider Benchmarks | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 5 (Adaptive Reasoning, Max Effort) |  Anthropic | 51 | - | 1M | $3.9 | 52 | Not available |   | |
| Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) | Anthropic | 50 | - | 1M | $3.9 | 51 | Not available | | |
| Claude Opus 5 (Adaptive Reasoning, High Effort) | Anthropic | 48 | - | 1M | $3.9 | 50 | Not available | | |
| Claude Opus 5 (Adaptive Reasoning, Medium Effort) | Anthropic | 45 | - | 1M | $3.9 | 48 | Not available | | |
| Claude Opus 5 (Adaptive Reasoning, Low Effort) | Anthropic | 40 | - | 1M | $3.9 | 48 | Not available | | |
| Gemini 3.5 Flash (medium) | Google | 34 | - | 1M | $1.3 | 217 | Not available | | |
| Gemini 3.5 Flash (high) | Google | 33 | - | 1M | $1.3 | 210 | Not available | | |
| Gemini 3.5 Flash (minimal) | Google | 24 | - | 1M | $1.3 | 199 | Not available | |