Gemini 2.5 Flash Preview 05-20 vs Gemini 2.0 Flash vs DeepSeek R1 0528
Too close to call on our weighted score (Gemini 2.0 Flash 67, Gemini 2.5 Flash Preview 05-20 67, DeepSeek R1 0528 53). The right pick depends on what you value most.
GoogleGemini 2.5 Flash Preview 05-20
67/100- ECI141.5
- Price$0.146 / $1.96
- Context1.05M
- Google
Gemini 2.0 Flash
67/100- ECI134.7
- Price$0.10 / $0.42
- Context1.05M
DeepSeekDeepSeek R1 0528
53/100- ECI141.2
- Price$0.512 / $2.19
- Context164K
Too close to call
It is close. Our weighted score puts them within a point (Gemini 2.0 Flash 67/100, Gemini 2.5 Flash Preview 05-20 67/100, DeepSeek R1 0528 53/100), so choose by what matters most for your work: Gemini 2.5 Flash Preview 05-20 for raw capability and Gemini 2.0 Flash on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityGemini 2.5 Flash Preview 05-20Capabilities Index (ECI): Gemini 2.5 Flash Preview 05-20 141.5 · DeepSeek R1 0528 141.2 · Gemini 2.0 Flash 134.7
- Lowest priceGemini 2.0 FlashGemini 2.0 Flash $0.18 · Gemini 2.5 Flash Preview 05-20 $0.60 · DeepSeek R1 0528 $0.932 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 Flash Preview 05-20 and Gemini 2.0 FlashGemini 2.5 Flash Preview 05-20 1,048,576 · Gemini 2.0 Flash 1,048,576 · DeepSeek R1 0528 163,840 tokens
- Widest inputsGemini 2.5 Flash Preview 05-20 and Gemini 2.0 FlashGemini 2.5 Flash Preview 05-20: Text, Images, PDFs, Audio, Video · Gemini 2.0 Flash: Text, Images, PDFs, Audio, Video · DeepSeek R1 0528: Text
- Self-hostingDeepSeek R1 0528Publishes downloadable weights (MIT)
| Measure | Weight | Gemini 2.5 Flash Preview 05-20 | Gemini 2.0 Flash | DeepSeek R1 0528 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 66 | 58 | 66 |
| Price | 25% | 58 | 82 | 49 |
| Inputs & features | 15% | 90 | 80 | 35 |
| Context window | 10% | 61 | 61 | 28 |
| Overall | 100% | 67/100 | 67/100 | 53/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini 2.5 Flash Preview 05-20Google | Gemini 2.0 FlashGoogle | DeepSeek R1 0528DeepSeek |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 141.5 (best) | 134.7 | 141.2 |
| ECI rank | #106 of 165 (best) | #130 of 165 | #108 of 165 |
| GPQA DiamondGraduate-level science questions | — | 64.1% | 76.3% (best) |
| OTIS Mock AIME 2024–2025Competition mathematics | 70.8% (best) | 31.1% | 66.4% |
| Price per million tokens | |||
| Input | $0.146 | $0.10 (best) | $0.512 |
| Output | $1.96 | $0.42 (best) | $2.19 |
| Cached input | — | — | — |
| Blended (3:1) | $0.60 | $0.18 (best) | $0.932 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 2 providers | Median of 1 providers | Median of 16 providers |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 1,048,576 tokens (best) | 163,840 tokens |
| Max output | 65,536 tokens (best) | 8,192 tokens | 32,768 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | No |
| PDFs | Yes | Yes | No |
| Audio | Yes | Yes | No |
| Video | Yes | Yes | No |
| Reasoning | Yes | No | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | OpenMIT |
| API model ID | — | — | — |
| API providers | 2 | 2 | 16 (best) |
| Released | May 20, 2025 | Dec 11, 2024 | May 28, 2025 |
| Knowledge cutoff | Jan 2025 | Jun 2024 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Gemini 2.5 Flash Preview 05-20$5.39
- Gemini 2.0 Flash$1.84
- DeepSeek R1 0528$9.50
Which should you choose?
Which is better: Gemini 2.5 Flash Preview 05-20, Gemini 2.0 Flash or DeepSeek R1 0528?
It is close. Our weighted score puts them within a point (Gemini 2.0 Flash 67/100, Gemini 2.5 Flash Preview 05-20 67/100, DeepSeek R1 0528 53/100), so choose by what matters most for your work: Gemini 2.5 Flash Preview 05-20 for raw capability and Gemini 2.0 Flash on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Gemini 2.5 Flash Preview 05-20, Gemini 2.0 Flash or DeepSeek R1 0528?
Gemini 2.0 Flash is cheaper at $0.10 input / $0.42 output per million tokens (median across 1 API provider). Gemini 2.5 Flash Preview 05-20 costs $0.146 input / $1.96 output per million tokens (median across 2 API providers); DeepSeek R1 0528 costs $0.512 input / $2.19 output per million tokens (median across 16 API providers). At a typical mix of three input tokens to one output token, that is $0.18 per million tokens for Gemini 2.0 Flash versus $0.60 for Gemini 2.5 Flash Preview 05-20 (3.3× as much) and $0.932 for DeepSeek R1 0528 (5.2× as much).
Which scores higher on benchmarks?
Gemini 2.5 Flash Preview 05-20 scores higher on the Capabilities Index (ECI): Gemini 2.5 Flash Preview 05-20 141.5 (#106 of 165), DeepSeek R1 0528 141.2 (#108 of 165) and Gemini 2.0 Flash 134.7 (#130 of 165). The confidence ranges of the top two overlap (139.3–142.9 vs 139.0–142.9), so treat the gap as small. On individual benchmarks: OTIS Mock AIME 2024–2025 — Gemini 2.5 Flash Preview 05-20 70.8%, DeepSeek R1 0528 66.4%, Gemini 2.0 Flash 31.1%.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 2.5 Flash Preview 05-20, Gemini 2.0 Flash and DeepSeek R1 0528 yet, so there is no like-for-like coding score. On overall capability, Gemini 2.5 Flash Preview 05-20 leads, which tends to carry over to coding, but test on your own codebase. All three support tool calling for agent workflows.
Which has the bigger context window?
Gemini 2.5 Flash Preview 05-20 and Gemini 2.0 Flash have the largest context windows (1,048,576 and 1,048,576 tokens), against 163,840 for DeepSeek R1 0528. Maximum output per response: Gemini 2.5 Flash Preview 05-20 up to 65,536, Gemini 2.0 Flash up to 8,192, DeepSeek R1 0528 up to 32,768 tokens.
Which can read images, PDFs, audio or video?
Gemini 2.5 Flash Preview 05-20 accepts text, images, PDFs, audio and video; Gemini 2.0 Flash accepts text, images, PDFs, audio and video; DeepSeek R1 0528 accepts text. Gemini 2.5 Flash Preview 05-20 handles the widest range of inputs.
Are any of these open source?
DeepSeek R1 0528 publishes its weights (MIT) and can be self-hosted; Gemini 2.5 Flash Preview 05-20 and Gemini 2.0 Flash is proprietary.
Which is newer?
DeepSeek R1 0528 is the newest, released May 28, 2025. Gemini 2.5 Flash Preview 05-20 came out May 20, 2025; Gemini 2.0 Flash came out Dec 11, 2024. Knowledge cutoff: Gemini 2.5 Flash Preview 05-20 Jan 2025, Gemini 2.0 Flash Jun 2024.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
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