Model comparison
Gemma 2 27B vs GPT-6 Astra
GPT-6 Astra is the stronger model overall, scoring 70.3 to 29.2 on the Noometry Index. Gemma 2 27B costs 31× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.
Last verified . 19 shared benchmarks.
GoogleSummary
- They share 19 benchmarks with published results for both. Gemma 2 27B scores higher in 0 categories and GPT-6 Astra in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-6 Astra leads 93.4 to 10.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.4% for Gemma 2 27B and 100% for GPT-6 Astra.
- Gemma 2 27B is cheaper at $0.65 / $0.65 per million input/output tokens, against $10 / $50 for GPT-6 Astra.
- GPT-6 Astra accepts more context: 1.05M tokens versus 8K.
- Gemma 2 27B has downloadable open weights; the other is API-only.
Side by side
| Gemma 2 27B | GPT-6 Astra | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 29.2 | 70.3 |
| Released | 2024-06-24 | 2026-09-03 |
| Weights | Open | Proprietary |
| Context window | 8K | 1.05M |
| Max output | 2K | 128K |
| Input $ / M tokens | $0.65 | $10 |
| Output $ / M tokens | $0.65 | $50 |
| Results tracked | 34 | 51 |
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Category by category
Coding GPT-6 Astra leads
Gemma 2 27B: 33.5 (#243), GPT-6 Astra: 70.5 (#3)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Coding | 1211 | 1488 |
| DeepSWE | — | 74.1% |
| FrontierCode | — | 53.3% |
| LMArena WebDev | — | 1792 |
| FrontierSWE | — | 65.5% |
| SciCode | — | 56.5% |
| WeirdML | — | 93.6% |
| BigCodeBench Instruct | 42.8% | — |
| LiveBench Coding | 36% | — |
| MirrorCode | — | 46.7% |
| BigCodeBench Complete | 52.5% | — |
| ALE-Bench | — | 2,951 |
Agentic & Tool Use Not comparable
Gemma 2 27B: —, GPT-6 Astra: 52.3 (#3)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| APEX-Agents | — | 64.7% |
| Remote Labor Index | — | 20.8% |
| BALROG | — | 68.3% |
| Vending-Bench 2 | — | 15,515 |
Reasoning GPT-6 Astra leads
Gemma 2 27B: 14.8 (#313), GPT-6 Astra: 85.1 (#1)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Hard Prompts | 1199 | 1464 |
| DTBench | 48% | 97.3% |
| LMCA | 7.1% | 64.4% |
| Epoch Capabilities Index | 122.06 | 166.6 |
| ARC-AGI-2 | — | 95% |
| NYT Connections (extended) | — | 98.1% |
| ARC-AGI-1 | — | 98.5% |
| CritPt | — | 31.7% |
| Chess Puzzles | — | 72% |
| EBR-Bench | — | 76.2% |
| LiveBench Reasoning | 28.1% | — |
| Mystery Game Puzzles | — | 84% |
| LiveBench Data Analysis | 47.9% | — |
| Bench to the Future 3 | — | 0.14 |
| LiveBench | 38.2% | — |
Math GPT-6 Astra leads
Gemma 2 27B: 10.0 (#306), GPT-6 Astra: 93.4 (#1)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.4% | 100% |
| LMArena Math | 1212 | 1463 |
| FrontierMath (Tiers 1-3) | — | 93.7% |
| FrontierMath Tier 4 | — | 97.6% |
| ProofBench | — | 99% |
| LiveBench Math | 26.5% | — |
| MATH Level 5 | 27.9% | — |
| FrontierMath Erdős | — | 2.9% |
Knowledge GPT-6 Astra leads
Gemma 2 27B: 18.9 (#275), GPT-6 Astra: 75.3 (#1)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| GPQA Diamond | 36.5% | 95.8% |
| LMArena Expert | 1172 | 1486 |
| Humanity's Last Exam | — | 54.8% |
| SimpleQA Verified | — | 75.6% |
| Confabulations | 27.1% | — |
| Vectara Hallucination Rate | — | 8.7% |
| MMLU | 75.7% | — |
Multimodal Not comparable
Gemma 2 27B: —, GPT-6 Astra: 55.1 (#3)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Vision | — | 1280 |
| Blueprint-Bench 2 | — | 49.7% |
| Furniture Assembly | — | 80% |
| LMArena Document | — | 1468 |
Multilingual GPT-6 Astra leads
Gemma 2 27B: 38.8 (#221), GPT-6 Astra: 54.0 (#53)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Non-English | 1217 | 1431 |
| LMArena Chinese | 1221 | 1495 |
| LMArena French | 1246 | 1467 |
| LMArena Russian | 1234 | 1434 |
| LMArena Spanish | 1228 | 1412 |
| LMArena German | 1209 | — |
| LMArena Japanese | 1175 | — |
| LMArena Korean | 1174 | — |
Instruction Following GPT-6 Astra leads
Gemma 2 27B: 60.7 (#244), GPT-6 Astra: 76.6 (#37)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Instruction Following | 1206 | 1454 |
| LiveBench Instruction Following | 58.1% | — |
Long Context GPT-6 Astra leads
Gemma 2 27B: 37.3 (#213), GPT-6 Astra: 44.7 (#57)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Longer Query | 1231 | 1460 |
Writing & Preference GPT-6 Astra leads
Gemma 2 27B: 44.4 (#220), GPT-6 Astra: 75.7 (#7)
| Benchmark | Gemma 2 27B | GPT-6 Astra |
|---|---|---|
| LMArena Text | 1231 | 1443 |
| LMArena Creative Writing | 1241 | 1423 |
| LMArena Multi-Turn | 1224 | 1457 |
| EQ-Bench Creative Writing | — | 2173 |
| LiveBench Language | 32.6% | — |
Frequently asked questions
Is Gemma 2 27B better than GPT-6 Astra?
GPT-6 Astra is the stronger model overall, scoring 70.3 to 29.2 on the Noometry Index. Gemma 2 27B costs 31× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.
Which is cheaper, Gemma 2 27B or GPT-6 Astra?
Gemma 2 27B is cheaper. It lists at $0.65 per million input tokens and $0.65 per million output tokens; GPT-6 Astra lists at $10 and $50.
Is Gemma 2 27B or GPT-6 Astra better for coding?
GPT-6 Astra scores higher on coding benchmarks: 70.5 versus 33.5 in the Noometry coding category.
Which has the bigger context window?
GPT-6 Astra does, with 1.05M tokens against 8K.
How many benchmarks do Gemma 2 27B and GPT-6 Astra share?
19 benchmarks have published results for both models. Gemma 2 27B has 34 scored results on Noometry and GPT-6 Astra has 51.