Model comparison
Grok Code Fast 1 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: Grok Code Fast 1 #180 (Supported); Sakana Fugu-Ultra unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok Code Fast 1 and Sakana Fugu-Ultra share 0 comparable benchmark results. 1 of 8 categories are comparable. 12 results are unique to Grok Code Fast 1; 11 to Sakana Fugu-Ultra.
Updated July 23, 2026- Shared results
- 0
- Grok Code Fast 1 only
- 12
- Sakana Fugu-Ultra only
- 11
- Comparable categories
- 1 / 8
Treat this as a split decision. Grok Code Fast 1 makes more sense if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model; Sakana Fugu-Ultra is the better fit if you need the larger 1M context window or you want the stronger reasoning-first profile.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Grok Code Fast 1 and Sakana Fugu-Ultra finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Sakana Fugu-Ultra is the reasoning model in the pair, while Grok Code Fast 1 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Sakana Fugu-Ultra gives you the larger context window at 1M, compared with 256K for Grok Code Fast 1.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok Code Fast 1 | Sakana Fugu-Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok Code Fast 1$0.2 input / $1.5 output | Sakana Fugu-UltraNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Grok Code Fast 1172 tok/s | Sakana Fugu-UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok Code Fast 12.81 s | Sakana Fugu-UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok Code Fast 1256K | Sakana Fugu-Ultra1M | Sakana Fugu-Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
CodingGrok Code Fast 1 wins7 benchmarks
| Benchmark | Grok Code Fast 1 | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 70.8% | — | Not comparable |
| AA-SciCodeSource | 36.2% | — | 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 | Grok Code Fast 1 | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.6% | — | Not comparable |
| AA-GPQA DiamondSource | 72.7% | — | Not comparable |
| AA-HLESource | 7.5% | — | Not comparable |
| AA-Omniscience IndexSource | -36.0% | — | Not comparable |
| AA-Omniscience AccuracySource | 23.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 78.5% | — | Not comparable |
| GPQASource | — | 95.5% | Not comparable |
| GPQA-DSource | — | 95.5% | Not comparable |
| HLE w/o toolsSource | — | 50% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Grok Code Fast 1 | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| CharXivSource | — | 86.6% | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Grok Code Fast 1 | Sakana Fugu-Ultra | Result |
|---|---|---|---|
| AA-IFBenchSource | 41.4% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Grok Code Fast 1 or Sakana Fugu-Ultra?
Grok Code Fast 1 and Sakana Fugu-Ultra are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for coding, Grok Code Fast 1 or Sakana Fugu-Ultra?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 64.5. Sakana Fugu-Ultra stays close enough that the answer can still flip depending on your workload.
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