Updated daily at 05:00 UTC
Vision-language
Gemini 3.5 Flash
- Released
- 19 May 2026
- Status
- Legacy
- Context
- 1M
- Max output
- 65.5K
- Input per 1M tokens
- $1.50
- Output per 1M tokens
- $9.00
- Open weights
- No
- License
- proprietary
- Parameters
- —
- Knowledge cutoff
- Jan 2025
- Reasoning
- Yes
- Modalities
- text, image, video, audio, pdf → text
Category scores
Out of 100, from independent and third-party results only, by method category-2026-09-29.1.
| Category | Score | Rank | Coverage |
|---|---|---|---|
| Knowledge & reasoning | 44.9 | 28 | 4 of 4 |
| Coding & software engineering | 37.4 | Not ranked | 1 of 5 |
| Factuality & hallucination | 66.2 | 10 | 1 of 1 |
| Human preference | 54.3 | 17 | 4 of 5 |
Benchmark results
Every result we hold for this model, with who ran it and where it was published.
Knowledge & reasoning
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Chess Puzzles | Puzzles solved | 50.0% | Independent | high | 28 May 2026 | Epoch AI |
| Chess Puzzles | Puzzles solved | 45.0% | Independent | low | 6 Aug 2026 | Epoch AI |
| Chess Puzzles | Puzzles solved | 43.0% | Independent | minimal | 15 Jul 2026 | Epoch AI |
| DTBench (Decision Theory Benchmark) | Accuracy (capability questions) | 94.7% | Third party | high | — | https://conceptualreasoning.ai/dtbench via Epoch AI |
| Earthborne Rangers (EBR-bench) | Objectives reached | 4.8% | Independent | high | 25 Jun 2026 | Epoch AI |
| LMCA (Language Model Conceptual Argumentation) | Correlation with expert ratings (Pearson r) | 0.4715 | Third party | high | — | https://conceptualreasoning.ai/lmca via Epoch AI |
| Mystery Game Puzzles | Puzzles solved | 32.0% | Independent | high | 27 Jul 2026 | Epoch AI |
| Mystery Game Puzzles | Puzzles solved | 28.0% | Independent | low | 5 Aug 2026 | Epoch AI |
| SimpleBench | Score (AVG@5) | 76.7% | Third party | unknown | — | SimpleBench Leaderboard via Epoch AI |
Scientific reasoning
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| GPQA Diamond | Accuracy | 92.8% | Independent | high | 22 May 2026 | Epoch AI |
| GPQA Diamond | Accuracy | 88.9% | Independent | low | 6 Aug 2026 | Epoch AI |
| GPQA Diamond | Accuracy | 86.4% | Independent | minimal | 15 Jul 2026 | Epoch AI |
| Surface Evolver Bench | Mean score (partial credit) | 58.1% | Third party | medium | — | https://yhenon.github.io/surface-evolver-llm-eval/ via Epoch AI |
Mathematics
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| FrontierMath Tier 4 | Accuracy | 26.8% | Independent | high | 10 Jun 2026 | Epoch AI |
| FrontierMath Tier 4 (v1) | Accuracy | 14.6% | Independent | high | 25 May 2026 | Epoch AI |
| FrontierMath Tiers 1-3 | Accuracy | 62.8% | Independent | high | 10 Jun 2026 | Epoch AI |
| FrontierMath Tiers 1-3 (v1) | Accuracy | 39.0% | Independent | high | 22 May 2026 | Epoch AI |
| OTIS Mock AIME 2024-2025 | Accuracy | 95.6% | Independent | high | 25 May 2026 | Epoch AI |
| OTIS Mock AIME 2024-2025 | Accuracy | 88.9% | Independent | low | 6 Aug 2026 | Epoch AI |
| OTIS Mock AIME 2024-2025 | Accuracy | 80.0% | Independent | minimal | 15 Jul 2026 | Epoch AI |
Coding & software engineering
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| DeepSWE | Pass@1 | 37.4% | Third party | medium | — | https://deepswe.datacurve.ai/ via Epoch AI |
| DeepSWE | Pass@1 | 36.1% | Third party | high | — | https://deepswe.datacurve.ai/ via Epoch AI |
| SWE-bench Verified | % resolved | 79.3% | Independent | high | 1 Jun 2026 | Epoch AI |
| WeirdML (v2) | Average accuracy | 62.6% | Third party | high | — | https://htihle.github.io/weirdml.html via Epoch AI |
Professional knowledge work
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| APEX-Agents | Pass@1 (all rubric criteria met) | 27.5% | Source not stated | unknown | — | Epoch AI via Epoch AI |
Factuality & hallucination
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| SimpleQA Verified | Accuracy (% correct) | 66.2% | Independent | high | 27 Aug 2026 | Epoch AI |
Human preference
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Code Arena: WebDev (arena.ai) | Arena score (Elo scale) | 1499 | Independent | high | 25 Sep 2026 | Arena |
| Code Arena: WebDev (arena.ai) | Arena score (Elo scale) | 1490 | Independent | medium | 25 Sep 2026 | Arena |
| Code Arena: WebDev (arena.ai) | Votes | 12270 | Independent | medium | 25 Sep 2026 | Arena |
| Code Arena: WebDev (arena.ai) | Votes | 9530 | Independent | high | 25 Sep 2026 | Arena |
| Document Arena (arena.ai) | Arena score (Elo scale) | 1461 | Independent | medium | 13 Sep 2026 | Arena |
| Document Arena (arena.ai) | Arena score (Elo scale) | 1453 | Independent | high | 13 Sep 2026 | Arena |
| Document Arena (arena.ai) | Votes | 6500 | Independent | medium | 13 Sep 2026 | Arena |
| Document Arena (arena.ai) | Votes | 4061 | Independent | high | 13 Sep 2026 | Arena |
| Text Arena (arena.ai) | Arena score (Elo scale) | 1477 | Independent | high | 25 Sep 2026 | Arena |
| Text Arena (arena.ai) | Arena score (Elo scale) | 1474 | Independent | medium | 25 Sep 2026 | Arena |
| Text Arena (arena.ai) | Votes | 46190 | Independent | high | 25 Sep 2026 | Arena |
| Text Arena (arena.ai) | Votes | 44906 | Independent | medium | 25 Sep 2026 | Arena |
| Vision Arena (arena.ai) | Arena score (Elo scale) | 1285 | Independent | high | 28 Sep 2026 | Arena |
| Vision Arena (arena.ai) | Arena score (Elo scale) | 1284 | Independent | medium | 28 Sep 2026 | Arena |
| Vision Arena (arena.ai) | Votes | 12124 | Independent | medium | 28 Sep 2026 | Arena |
| Vision Arena (arena.ai) | Votes | 11983 | Independent | high | 28 Sep 2026 | Arena |
Other Gemini Flash versions
- Gemini 3.8 Flash Cyber16 Sep 2026
- Gemini 3.8 Flash2 Sep 2026
- Gemini 3.7 Flash13 Aug 2026
- Gemini 3.6 Flash21 Jul 2026
- Gemini 3 Flash17 Dec 2025
- Gemini 2.5 Flash17 Apr 2025
- Gemini 2.0 Flash Thinking19 Dec 2024
- Gemini 2.0 Flash11 Dec 2024
- Gemini 1.5 Flash-8B27 Aug 2024
- Gemini 1.5 Flash14 May 2024
Sources
- https://ai.google.dev/gemini-api/docs/models/gemini-3.5-flash
- https://ai.google.dev/gemini-api/docs/whats-new-gemini-3.5
- https://ai.google.dev/gemini-api/docs/pricing
- https://ai.google.dev/gemini-api/docs/deprecations
- https://ai.google.dev/gemini-api/docs/changelog
- https://deepmind.google/models/model-cards/gemini-3-5-flash/