Claude Opus 4.8 (Fast) vs Gemini 2.5 Pro
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Claude Opus 4.8 (Fast) if you need
- ✓Need maximum output speed above 130 t/s for large multimodal workloads
- ✓Require the lowest price at $10 per million tokens
- ✓Want native multi-modality support with strong text-visual-audio integration
- ✓Need a context window slightly above 1M tokens for extended files
Choose Gemini 2.5 Pro if you need
- ✓Need the highest intelligence index (55.7) and careful reasoning
- ✓Prioritize strong safety alignment and high-quality analysis
- ✓Value nuanced handling of large contexts with cautious outputs
- ✓Can accept slower speed and higher cost for depth over velocity
Verdict
Claude Opus 4.8 (Fast) leads on intelligence (55.7 vs 27) and nuanced reasoning while Gemini 2.5 Pro dominates speed (131 t/s vs 65 t/s) and price ($10 vs $50 per 1M). Gemini also offers a marginally larger context window and stronger native multimodal integration. The choice hinges on whether raw capability or cost-efficient high-speed multimodal handling matters most.
Claude Opus 4.8 (Fast) vs Gemini 2.5 Pro: side by side
| Spec | Claude Opus 4.8 (Fast) | Gemini 2.5 Pro | Winner |
|---|---|---|---|
| Intelligence | 55.7 | 27 | Claude Opus 4.8 (Fast) |
| Output speed | 65 t/s | 131 t/s | Gemini 2.5 Pro |
| Output price | $50.00/1M | $10.00/1M | Gemini 2.5 Pro |
| Context | 1000K | 1049K | Gemini 2.5 Pro |
| Params | — | — | Tie |
| Provider | Anthropic | Tie |
Detailed analysis
Intelligence
Winner: Claude Opus 4.8 (Fast)Claude Opus 4.8 (Fast) scores 55.7 on the intelligence index compared to Gemini 2.5 Pro's 27. Its strengths include nuanced reasoning and high-quality writing. Gemini does not list comparable reasoning advantages in the provided data.
Speed
Winner: Gemini 2.5 ProGemini 2.5 Pro outputs at 131.03 tokens per second versus Claude's 65.39 t/s. This makes Gemini substantially faster for high-volume multimodal tasks. Claude's fast mode is noted to sometimes trade depth for speed.
Pricing
Winner: Gemini 2.5 ProGemini 2.5 Pro costs $10 per million output tokens while Claude Opus 4.8 (Fast) costs $50 per million. Gemini therefore offers a fivefold price advantage. No other cost factors are provided.
Multimodal & Context
Winner: Gemini 2.5 ProGemini provides native multimodal support across text, visual, and audio with a 1,048,576-token context. Claude offers effective large-context handling at 1,000,000 tokens but its multimodal performance varies with image clarity. Gemini's context is marginally larger.
Claude Opus 4.8 (Fast)
Pros
- +Strong safety alignment
- +Nuanced and careful reasoning
- +Effective large-context handling
Cons
- –Can be overly cautious on edge cases
- –Multimodal performance varies with image clarity
- –Fast mode may trade some depth for speed
Gemini 2.5 Pro
Pros
- +Very large context window for extended inputs
- +Native support for multiple modalities in one model
- +Strong integration of text with visual and audio data
Cons
- –Higher latency on very large multimodal inputs
- –Performance can vary with extremely long contexts
- –Dependent on Google infrastructure for access
Summary: Claude Opus 4.8 (Fast) vs Gemini 2.5 Pro
Choose Gemini 2.5 Pro when speed, price, and native multimodal file handling are priorities. Select Claude Opus 4.8 (Fast) when maximum intelligence and careful reasoning outweigh cost and latency. The models target different trade-offs within the multimodal category.
Frequently asked questions
Neither is universally better; Claude leads on intelligence while Gemini leads on speed and price.