DeepSeek V4.1 Flash (Max) vs Claude Opus 5.5 (Max, Default Fallback)
Claude Opus 5.5 (Max, Default Fallback) scores 59.1 on the Artificial Analysis Intelligence Index, against 28.6 for DeepSeek V4.1 Flash (Max). DeepSeek V4.1 Flash (Max) costs $0.525 per million tokens (3:1 blend), against $8 for Claude Opus 5.5 (Max, Default Fallback). DeepSeek V4.1 Flash (Max) generates 200 t/s, against 95 t/s for Claude Opus 5.5 (Max, Default Fallback). Both accept a context of 1M tokens.
Comparison generated from the catalogue data. Add or remove models below to refine it.
2 models compared
- DeepSeek V4.1 Flash (Max)
DeepSeek
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | DeepSeek V4.1 Flash (Max) DeepSeek | Add a model · 2/4 | |
|---|---|---|---|
| Intelligence | 28.6 | Best: 59.1 | |
| Cyber Index | Best: 40.8% | 28.7% | |
| Speed | Best: 200 t/s | 95 t/s | |
| TTFT | Best: 0.86 s | 643 s | |
| Input · $ / 1M tokens | Best: $0.30 | $4×13.3 relative to the lowest price among the compared models | |
| Output · $ / 1M tokens | Best: $1.20 | $20×16.7 relative to the lowest price among the compared models | |
| Context window | 1M | 1M | |
| Reasoning | Yes | Yes | |
| Open weights | Yes | Yes | |
| Cost / task | Best: $0.318 | $10.04×31.6 relative to the lowest price among the compared models |
Intelligence
- DeepSeek V4.1 Flash (Max)
- 28.6
- Claude Opus 5.5 (Max, Default Fallback)
- Best: 59.1
Cyber Index
- DeepSeek V4.1 Flash (Max)
- Best: 40.8%
- Claude Opus 5.5 (Max, Default Fallback)
- 28.7%
Speed
- DeepSeek V4.1 Flash (Max)
- Best: 200 t/s
- Claude Opus 5.5 (Max, Default Fallback)
- 95 t/s
TTFT
- DeepSeek V4.1 Flash (Max)
- Best: 0.86 s
- Claude Opus 5.5 (Max, Default Fallback)
- 643 s
Input · $ / 1M tokens
- DeepSeek V4.1 Flash (Max)
- Best: $0.30
- Claude Opus 5.5 (Max, Default Fallback)
- $4×13.3 relative to the lowest price among the compared models
Output · $ / 1M tokens
- DeepSeek V4.1 Flash (Max)
- Best: $1.20
- Claude Opus 5.5 (Max, Default Fallback)
- $20×16.7 relative to the lowest price among the compared models
Context window
- DeepSeek V4.1 Flash (Max)
- 1M
- Claude Opus 5.5 (Max, Default Fallback)
- 1M
Reasoning
- DeepSeek V4.1 Flash (Max)
- Yes
- Claude Opus 5.5 (Max, Default Fallback)
- Yes
Open weights
- DeepSeek V4.1 Flash (Max)
- Yes
- Claude Opus 5.5 (Max, Default Fallback)
- Yes
Cost / task
- DeepSeek V4.1 Flash (Max)
- Best: $0.318
- Claude Opus 5.5 (Max, Default Fallback)
- $10.04×31.6 relative to the lowest price among the compared models
Each reasoning level remains a separate configuration.
Score and cost
Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.
- DeepSeek V4.1 Flash (Max)28.6 · $0.318
- Claude Opus 5.5 (Max, Default Fallback)59.1 · $10.04