Fusion Reasoning on Arena Elo: score, rank and what it means
Fusion Reasoning scores 1357.6 on Arena Elo, placing it #348 of 600 models in the index. The benchmark average is 1349.9 and the leader is Claude Opus 4.5 Max at 1501.9.
Score distribution
The chart shows the top 10 models on Arena Elo, with Fusion Reasoning highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | Claude Opus 4.5 Max | Anthropic | 1000000 | $20.90 | 87.8 |
| 2 | GPT-5.2 Reasoning | OpenAI | 1000000 | $20.98 | 87.5 |
| 3 | GPT-5.2 Turbo | OpenAI | 1000000 | $20.73 | 87.4 |
| 4 | Claude Opus 4.5 Reasoning | Anthropic | 2000000 | $20.91 | 88.2 |
| 5 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 6 | Gemini 3 Pro Turbo | Google DeepMind | 400000 | $19.62 | 86.4 |
| 7 | Grok 4 Max | xAI | 2000000 | $19.70 | 86.6 |
| 8 | Claude Opus 4.5 | Anthropic | 400000 | $19.42 | 87.7 |
| 9 | GPT-5.1 Pro | OpenAI | 200000 | $19.77 | 87.8 |
| 10 | Grok 4 Reasoning | xAI | 2000000 | $19.67 | 87.8 |
What this score means
On Arena Elo, Fusion Reasoning sits at #348 of 600. The leader, Claude Opus 4.5 Max, scores 1501.9, so the gap to the top is 144.3 points. The median model in this index scores 1373.8, which puts Fusion Reasoning below the midpoint.
OpenRouter models average 1336.2 on this benchmark. Fusion Reasoning is 21.4 points above that provider line, so it is a stronger result than the average OpenRouter model.
Among mid-range models, the average is 1332.0. Fusion Reasoning is 25.6 points above that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 1357.6 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $8.59 per million input tokens, Fusion Reasoning is above the median input price of $4.00 across the 600 models scored on Arena Elo. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Reka Core Mini | Reka AI | 8192 | $7.48 | 70.1 |
| Fusion Max | OpenRouter | 65536 | $9.14 | 72.5 |
| Firefunction Reasoning | Fireworks AI | 8192 | $9.08 | 72.5 |
| Firefunction Pro | Fireworks AI | 16384 | $9.05 | 72.9 |
| Fusion Reasoning | OpenRouter | 65536 | $8.59 | 72.2 |
| Firefunction | Fireworks AI | 16384 | $8.16 | 72.3 |
| Phi-3.5 | Microsoft | 16384 | $2.81 | 70.9 |
Other benchmarks for Fusion Reasoning
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 73.3 | 365 | 39th | |
| GPQA Diamond | 67.4 | 323 | 46th | |
| SWE-bench Verified | 61.7 | 288 | 52th | |
| HumanEval | 78.2 | 285 | 53th | |
| MATH-500 | 73.1 | 356 | 41th | |
| AIME 2025 | 63.3 | 364 | 39th | |
| LiveCodeBench | 66.6 | 259 | 57th | |
| IFEval | 82.0 | 278 | 54th | |
| TruthfulQA | 73.8 | 358 | 40th | |
| HellaSwag | 84.1 | 274 | 54th | |
| MMMU | 71.0 | 272 | 55th |
FAQ
What score does Fusion Reasoning get on Arena Elo?
Fusion Reasoning scores 1357.6 on Arena Elo in this index. The benchmark average is 1349.9 and the top score is 1501.9.
How does Fusion Reasoning rank on Arena Elo?
It ranks #348 of 600 models, in the 42nd percentile. The leader is Claude Opus 4.5 Max at 1501.9.
Is Fusion Reasoning good at Arena Elo?
It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.
How is the Arena Elo score calculated?
Arena Elo is a preference benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Fusion Reasoning cost?
Fusion Reasoning costs $8.59 per million input tokens and $32.34 per million output tokens.