GPT OSS 20B vs Qwen3 30B-A3B Instruct 2507 vs Gemini 2.5 Flash-Lite Preview 06-17
Gemini 2.5 Flash-Lite Preview 06-17 comes out ahead, 67 to 61 and 59 on our weighted score, though GPT OSS 20B is 45% cheaper per token.
OpenAIGPT OSS 20B
61/100- ECI137.8
- Price$0.07 / $0.25
- Context131K
Alibaba (Qwen)Qwen3 30B-A3B Instruct 2507
59/100- ECI137.3
- Price$0.10 / $0.30
- Context262K
- Our pick
GoogleGemini 2.5 Flash-Lite Preview 06-17
67/100- ECI133.8
- Price$0.12 / $0.48
- Context1.05M
Gemini 2.5 Flash-Lite Preview 06-17 is our pick
Gemini 2.5 Flash-Lite Preview 06-17 is the better all-round choice, scoring 67/100 against GPT OSS 20B (61) and Qwen3 30B-A3B Instruct 2507 (59). It leads on inputs & features and context window. GPT OSS 20B wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityGPT OSS 20BCapabilities Index (ECI): GPT OSS 20B 137.8 · Qwen3 30B-A3B Instruct 2507 137.3 · Gemini 2.5 Flash-Lite Preview 06-17 133.8
- Lowest priceGPT OSS 20BGPT OSS 20B $0.115 · Qwen3 30B-A3B Instruct 2507 $0.15 · Gemini 2.5 Flash-Lite Preview 06-17 $0.21 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 Flash-Lite Preview 06-17Gemini 2.5 Flash-Lite Preview 06-17 1,048,576 · Qwen3 30B-A3B Instruct 2507 262,144 · GPT OSS 20B 131,072 tokens
- Widest inputsGemini 2.5 Flash-Lite Preview 06-17GPT OSS 20B: Text · Qwen3 30B-A3B Instruct 2507: Text · Gemini 2.5 Flash-Lite Preview 06-17: Text, Images, PDFs, Audio, Video
- Self-hostingGPT OSS 20B and Qwen3 30B-A3B Instruct 2507Publishes downloadable weights (Apache 2.0)
| Measure | Weight | GPT OSS 20B | Qwen3 30B-A3B Instruct 2507 | Gemini 2.5 Flash-Lite Preview 06-17 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 61 | 61 | 57 |
| Price | 25% | 90 | 85 | 79 |
| Inputs & features | 15% | 35 | 25 | 90 |
| Context window | 10% | 25 | 37 | 61 |
| Overall | 100% | 61/100 | 59/100 | 67/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | GPT OSS 20BOpenAI | Qwen3 30B-A3B Instruct 2507Alibaba (Qwen) | Gemini 2.5 Flash-Lite Preview 06-17Google |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 137.8 (best) | 137.3 | 133.8 |
| ECI rank | #122 of 165 (best) | #124 of 165 | #132 of 165 |
| GPQA DiamondGraduate-level science questions | 60.8% (best) | 55.6% | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 65.3% (best) | 62.2% | — |
| Price per million tokens | |||
| Input | $0.07 (best) | $0.10 | $0.12 |
| Output | $0.25 (best) | $0.30 | $0.48 |
| Cached input | — | — | — |
| Blended (3:1) | $0.115 (best) | $0.15 | $0.21 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 37 providers | Median of 12 providers | Median of 2 providers |
| Limits | |||
| Context window | 131,072 tokens | 262,144 tokens | 1,048,576 tokens (best) |
| Max output | 32,768 tokens | 16,384 tokens | 65,536 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | No | Yes |
| PDFs | No | No | Yes |
| Audio | No | No | Yes |
| Video | No | No | Yes |
| Reasoning | Yes | No | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | No | No |
| Availability | |||
| Weights | Open | OpenApache 2.0 | Proprietary |
| API model ID | — | — | — |
| API providers | 41 (best) | 14 | 2 |
| Released | Aug 5, 2025 | Jul 28, 2025 | Jun 17, 2025 |
| Knowledge cutoff | Jun 2024 | — | Jan 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- GPT OSS 20B$1.20
- Qwen3 30B-A3B Instruct 2507$1.60
- Gemini 2.5 Flash-Lite Preview 06-17$2.16
Which should you choose?
Which is better: GPT OSS 20B, Qwen3 30B-A3B Instruct 2507 or Gemini 2.5 Flash-Lite Preview 06-17?
Gemini 2.5 Flash-Lite Preview 06-17 is the better all-round choice, scoring 67/100 against GPT OSS 20B (61) and Qwen3 30B-A3B Instruct 2507 (59). It leads on inputs & features and context window. GPT OSS 20B wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, GPT OSS 20B, Qwen3 30B-A3B Instruct 2507 or Gemini 2.5 Flash-Lite Preview 06-17?
GPT OSS 20B is cheaper at $0.07 input / $0.25 output per million tokens (median across 37 API providers). Qwen3 30B-A3B Instruct 2507 costs $0.10 input / $0.30 output per million tokens (median across 12 API providers); Gemini 2.5 Flash-Lite Preview 06-17 costs $0.12 input / $0.48 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $0.115 per million tokens for GPT OSS 20B versus $0.15 for Qwen3 30B-A3B Instruct 2507 (1.3× as much) and $0.21 for Gemini 2.5 Flash-Lite Preview 06-17 (1.8× as much).
Which scores higher on benchmarks?
GPT OSS 20B scores higher on the Capabilities Index (ECI): GPT OSS 20B 137.8 (#122 of 165), Qwen3 30B-A3B Instruct 2507 137.3 (#124 of 165) and Gemini 2.5 Flash-Lite Preview 06-17 133.8 (#132 of 165). The confidence ranges of the top two overlap (133.1–139.7 vs 131.7–139.4), so treat the gap as small.
Which is better for coding?
There are no published SWE-bench Verified results for GPT OSS 20B, Qwen3 30B-A3B Instruct 2507 and Gemini 2.5 Flash-Lite Preview 06-17 yet, so there is no like-for-like coding score. On overall capability, GPT OSS 20B 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-Lite Preview 06-17 has the largest context window at 1,048,576 tokens, against 262,144 for Qwen3 30B-A3B Instruct 2507 and 131,072 for GPT OSS 20B. Maximum output per response: GPT OSS 20B up to 32,768, Qwen3 30B-A3B Instruct 2507 up to 16,384, Gemini 2.5 Flash-Lite Preview 06-17 up to 65,536 tokens.
Which can read images, PDFs, audio or video?
GPT OSS 20B accepts text; Qwen3 30B-A3B Instruct 2507 accepts text; Gemini 2.5 Flash-Lite Preview 06-17 accepts text, images, PDFs, audio and video. Gemini 2.5 Flash-Lite Preview 06-17 handles the widest range of inputs.
Are any of these open source?
GPT OSS 20B and Qwen3 30B-A3B Instruct 2507 publishes its weights (Apache 2.0) and can be self-hosted; Gemini 2.5 Flash-Lite Preview 06-17 is proprietary.
Which is newer?
GPT OSS 20B is the newest, released Aug 5, 2025. Qwen3 30B-A3B Instruct 2507 came out Jul 28, 2025; Gemini 2.5 Flash-Lite Preview 06-17 came out Jun 17, 2025. Knowledge cutoff: GPT OSS 20B Jun 2024, Gemini 2.5 Flash-Lite Preview 06-17 Jan 2025.
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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