Pythia 8B on Arena Elo: score, rank and what it means
Pythia 8B scores 1130.8 on Arena Elo, placing it #592 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 Pythia 8B 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, Pythia 8B sits at #592 of 600. The leader, Claude Opus 4.5 Max, scores 1501.9, so the gap to the top is 371.1 points. The median model in this index scores 1373.8, which puts Pythia 8B below the midpoint.
EleutherAI models average 1208.8 on this benchmark. Pythia 8B is 78.0 points below that provider line, so it is a weaker result than the average EleutherAI model.
Among small open-weight models, the average is 1224.7. Pythia 8B is 93.9 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 1130.8 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 $0.16 per million input tokens, Pythia 8B is below 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 |
|---|---|---|---|---|
| Pythia 7B | EleutherAI | 8192 | $0.10 | 40.7 |
| Arctic 1.5B | Snowflake | 32768 | $0.15 | 43.2 |
| SmolLM3 7B | Hugging Face | 16384 | $0.19 | 44.3 |
| Zephyr 8B | Hugging Face | 8192 | $0.22 | 43.0 |
| Pythia 8B | EleutherAI | 32768 | $0.16 | 41.4 |
| GPT-NeoX 7B | EleutherAI | 8192 | $0.20 | 42.4 |
| Zephyr 7B | Hugging Face | 32768 | $0.23 | 42.5 |
Other benchmarks for Pythia 8B
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 50.3 | 593 | 1th | |
| GPQA Diamond | 38.2 | 592 | 1th | |
| SWE-bench Verified | 27.3 | 588 | 2th | |
| HumanEval | 42.8 | 594 | 1th | |
| MATH-500 | 37.9 | 595 | 1th | |
| AIME 2025 | 29.8 | 584 | 3th | |
| LiveCodeBench | 24.1 | 594 | 1th | |
| IFEval | 53.9 | 593 | 1th | |
| TruthfulQA | 49.7 | 594 | 1th | |
| HellaSwag | 60.7 | 595 | 1th | |
| MMMU | 40.5 | 593 | 1th |
FAQ
What score does Pythia 8B get on Arena Elo?
Pythia 8B scores 1130.8 on Arena Elo in this index. The benchmark average is 1349.9 and the top score is 1501.9.
How does Pythia 8B rank on Arena Elo?
It ranks #592 of 600 models, in the 1st percentile. The leader is Claude Opus 4.5 Max at 1501.9.
Is Pythia 8B 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 Pythia 8B cost?
Pythia 8B costs $0.16 per million input tokens and $0.79 per million output tokens.