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claude sonnet 5 5 vs opus 5 5
This article covers what the tools do, how they compare, and where to start on Pixwit without leaving this page for a second landing.
Author: Pixwit Team · Date: October 15, 2026

Claude Sonnet 5.5 vs Claude Opus 5.5: Release Comparison
Comparison of the Claude Sonnet 5.5 and Claude Opus 5.5 releases: 5 and 5 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 10 models.
- For intelligence, Claude Opus 5.5 scores highest: Claude Opus 5.5 (Max, Default Fallback) at 58, against Claude Sonnet 5.5 (Max, Default Fallback) at 56 for Claude Sonnet 5.5.
- For output speed, Claude Sonnet 5.5 is fastest: Claude Sonnet 5.5 (Max, Default Fallback) at 129 t/s, against Claude Opus 5.5 (Max, Default Fallback) at 95 t/s for Claude Opus 5.5.
- For cost per task, Claude Sonnet 5.5 is cheapest: Claude Sonnet 5.5 (Low, Default Fallback) at $0.35, against Claude Opus 5.5 (Low, Default Fallback) at $0.55 for Claude Opus 5.5. | | [Claude Opus 5.5 (max with fallback)]( | [Claude Sonnet 5.5 (max with fallback)]( | [Claude Opus 5.5 (xhigh with fallback)]( | [Claude Opus 5.5 (high with fallback)]( | [Claude Sonnet 5.5 (xhigh with fallback)]( | [Claude Opus 5.5 (medium with fallback)]( | [Claude Sonnet 5.5 (high with fallback)]( | [Claude Opus 5.5 (low with fallback)]( | [Claude Sonnet 5.5 (medium with fallback)]( | [Claude Sonnet 5.5 (low with fallback)]( | |---|---|---|---|---|---|---|---|---|---|---| | Intelligence Index | 58 | 56 | 56 | 54 | 52 | 51 | 47 | 42 | 41 | 36 | | Finance & Accounting | 61 | 57 | 58 | 56 | 52 | 54 | 47 | 46 | 41 | 38 | | Strategy & Ops | 64 | 60 | 62 | 59 | 56 | 57 | 52 | 48 | 45 | 41 | | Legal | 63 | 56 | 61 | 59 | 52 | 57 | 49 | 52 | 44 | 41 | | Healthcare & Medical | 61 | 58 | -- | -- | -- | -- | -- | -- | -- | -- | | Cost per TaskUSD | $5.98 | $5.46 | $3.46 | $1.82 | $2.01 | $1.34 | $0.88 | $0.55 | $0.48 | $0.35 | | Output SpeedTokens/s | 95 | 129 | 76 | 74 | 97 | 73 | 92 | 74 | 94 | 92 | | Time to First Tokens | 679.24 | 446.03 | 144.79 | 60.69 | 34.55 | 27.36 | 14.64 | 11.20 | 1.80 | 0.86 | | Context Window | 1M | 1M | 1M | 1M | 1M | 1M | 1M | 1M | 1M | 1M | | Creator | | | | | | | | | | | | License | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | Proprietary | | Input Modality | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | Supports: text and image | | Output Modality | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | Supports: text | | Providers | | | | | | | | | | |
Intelligence
[benchmark dashboards Intelligence Index](
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indexes
[Finance & Accounting Index]( Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better [Strategy & Ops Index]( Incorporates 6 evaluations: GDPval-AA v2.1, AA-Briefcase v1.1, AA-Omniscience, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better [Legal Index]( Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better [Healthcare & Medical Index]( Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better [Engineering Index]( Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better [Economics Index]( Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better
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