DeepSeek V4.1 Flash (max) vs Claude Opus 5.5 (xhigh)
Results updated 31 October 2026 · Both in Claude Code · How we benchmark
Verdict
Claude Opus 5.5 (xhigh) clearly beats DeepSeek V4.1 Flash (max) by 17 points, and is faster; DeepSeek V4.1 Flash (max) is cheaper.
- Cost per task
- $0.20 vs $0.25
- Time per task
- 10.9 min vs 1.4 min
- Tokens per attempt
- 1.58M vs 174k
- Image input
- Yes vs Yes
Claude Opus 5.5 (xhigh), Claude Code scores higher than DeepSeek V4.1 Flash (max), Claude Code on all 3 evaluations scored for both. DeepSeek V4.1 Flash (max), Claude Code is cheaper ($0.20 against $0.25 per task), but Claude Opus 5.5 (xhigh), Claude Code is faster (1.4 min against 10.9 min).
Where they differ most
By kind of work, share of tasks passed, 0 to 100 · Higher is better
| Kind of work | DeepSeek V4.1 Flash (max) | Claude Opus 5.5 (xhigh) |
|---|---|---|
| Recognising infeasible requests | 40 | 82 |
| Spatial statistics | 31 | 62 |
| Making maps | 72 | 88 |
| Remote sensing and raster analysis | 75 | 89 |
Where the tasks are set: each kind of work links to its tasks and scoresCharts for each: DeepSeek V4.1 Flash (max), Claude Code · Claude Opus 5.5 (xhigh), Claude Code.
Side by side
| Metric | DeepSeek V4.1 Flash (max), Claude Code | Claude Opus 5.5 (xhigh), Claude Code |
|---|---|---|
| Geospatial Agent Index: Text only | 68 | 85 |
| Geospatial Agent Index: Text + vision | No data | 88 |
| Earth-Bench V2 score | 58 | 77 |
| GeoBenchX score | 55 | 83 |
| GS-QA2 score | 89 | 94 |
| Vision agents score | No data | 97 |
| GeoAgentBench score (Guided workflows; not in the Agent Index) | 96 | 98 |
| GeoAnalystBench score (Guided workflows; not in the Agent Index) | 100 | 100 |
| OGD4All score (standalone; in no index) | 79 | 96 |
| GeoNatureAgent score (standalone; in no index) | 100 | 100 |
| MultiGlobeQA score (standalone; in no index) | 64 | 79 |
| GeoAgentEval score (standalone; in no index) | 84 | 100 |
| Remote sensing and raster analysis score | 75 | 89 |
| GIS analysis score | 92 | 94 |
| Climate and time series score | 64 | 75 |
| Spatial statistics score | 31 | 62 |
| Making maps score | 72 | 88 |
| Recognising infeasible requests score | 40 | 82 |
| Cost per task | $0.20 | $0.25 |
| Time per task (at 100 output tokens/s) | 10.9 min | 1.4 min |
| Tokens per attempt | 1.58M | 174k |
| Turns per attempt | 26.0 | 6.9 |
| Input price per 1M tokens | $0.30 | $4.00 |
| Output price per 1M tokens | $1.20 | $20.00 |
| Context window | 1,048,576 | 1,000,000 |
| Image input | Yes | Yes |
| Developer | DeepSeek | Anthropic |
Frequently asked questions
Which scores higher on the Geospatial Agent Index, DeepSeek V4.1 Flash (max), Claude Code or Claude Opus 5.5 (xhigh), Claude Code?
Claude Opus 5.5 (xhigh), Claude Code, 85 to 68.
Which is cheaper per task, DeepSeek V4.1 Flash (max), Claude Code or Claude Opus 5.5 (xhigh), Claude Code?
DeepSeek V4.1 Flash (max), Claude Code, $0.20 to $0.25.
Which writes fewer output tokens per task, DeepSeek V4.1 Flash (max), Claude Code or Claude Opus 5.5 (xhigh), Claude Code?
Claude Opus 5.5 (xhigh), Claude Code, 5k to 48k.
Which has the larger context window, DeepSeek V4.1 Flash (max), Claude Code or Claude Opus 5.5 (xhigh), Claude Code?
DeepSeek V4.1 Flash (max), Claude Code, 1,048,576 tokens to 1,000,000 tokens.