Model comparison
DeepSeek V3.1 (Reasoning) vs Sakana Fugu-Ultra
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeek V3.1 (Reasoning) #97 (Supported); Sakana Fugu-Ultra unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V3.1 (Reasoning) and Sakana Fugu-Ultra share 0 comparable benchmark results. 0 of 8 categories are comparable. 12 results are unique to DeepSeek V3.1 (Reasoning); 11 to Sakana Fugu-Ultra.
Updated July 23, 2026- Shared results
- 0
- DeepSeek V3.1 (Reasoning) only
- 12
- Sakana Fugu-Ultra only
- 11
- Comparable categories
- 0 / 8
Benchmark data for DeepSeek V3.1 (Reasoning) and Sakana Fugu-Ultra is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Sakana Fugu-Ultra has the larger context window at 1M, compared with 128K for DeepSeek V3.1 (Reasoning).
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V3.1 (Reasoning) | Sakana Fugu-Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V3.1 (Reasoning)$0 input / $0 output | Sakana Fugu-UltraNot available | A complete price comparison is not available. |
| Generation speedtokens per second | DeepSeek V3.1 (Reasoning)Not available | Sakana Fugu-UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V3.1 (Reasoning)Not available | Sakana Fugu-UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V3.1 (Reasoning)128K | Sakana Fugu-Ultra1M | Sakana Fugu-Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding6 benchmarks
| Benchmark | DeepSeek V3.1 (Reasoning) | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| AA-SciCodeSource | 39.1% | — | Not comparable |
| SWE-bench ProSource | — | 73.7% | Not comparable |
| Terminal-Bench 2.0Source | — | 82.1% | Not comparable |
| LiveCodeBench v6Source | — | 93.2% | Not comparable |
| LiveCodeBench ProSource | — | 90.8% | Not comparable |
| SciCodeSource | — | 58.7% | Not comparable |
Reasoning3 benchmarks
Knowledge9 benchmarks
| Benchmark | DeepSeek V3.1 (Reasoning) | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 20.7% | — | Not comparable |
| AA-GPQA DiamondSource | 77.9% | — | Not comparable |
| AA-HLESource | 13.0% | — | Not comparable |
| AA-Omniscience IndexSource | -28.4% | — | Not comparable |
| AA-Omniscience AccuracySource | 28.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 80.3% | — | Not comparable |
| GPQASource | — | 95.5% | Not comparable |
| GPQA-DSource | — | 95.5% | Not comparable |
| HLE w/o toolsSource | — | 50% | Not comparable |
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | DeepSeek V3.1 (Reasoning) | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| AA-IFBenchSource | 41.5% | — | Not comparable |
Frequently Asked Questions (3)
Can I compare DeepSeek V3.1 (Reasoning) and Sakana Fugu-Ultra on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for DeepSeek V3.1 (Reasoning) and Sakana Fugu-Ultra today?
DeepSeek V3.1 (Reasoning): $0.00 input / $0.00 output per 1M tokens Sakana Fugu-Ultra: Pricing unavailable Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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