Gemini 2.5 Flash vs Kimi K2 Instruct vs Trinity Mini
Too close to call on our weighted score (Gemini 2.5 Flash 68, Trinity Mini 65, Kimi K2 Instruct 36). The right pick depends on what you value most.
GoogleGemini 2.5 Flash
68/100- ECI140.6
- Price$0.30 / $2.50
- Context1.05M
Moonshot AIKimi K2 Instruct
36/100- ECI139.9
- Price$0.57 / $2.30
- Context131K
Arcee AITrinity Mini
65/100- ECI—
- Price$0.045 / $0.15
- Context131K
Too close to call
It is close. Our weighted score puts them within 2 points (Gemini 2.5 Flash 68/100, Trinity Mini 65/100, Kimi K2 Instruct 36/100), so choose by what matters most for your work: Trinity Mini on price and Gemini 2.5 Flash for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceTrinity MiniTrinity Mini $0.071 · Gemini 2.5 Flash $0.85 · Kimi K2 Instruct $1.00 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 FlashGemini 2.5 Flash 1,048,576 · Kimi K2 Instruct 131,072 · Trinity Mini 131,072 tokens
- Widest inputsGemini 2.5 FlashGemini 2.5 Flash: Text, Images, PDFs, Audio, Video · Kimi K2 Instruct: Text · Trinity Mini: Text
- Self-hostingKimi K2 Instruct and Trinity MiniPublishes downloadable weights (Modified MIT and OpenMDW-1.1)
| Measure | Weight | Gemini 2.5 Flash | Kimi K2 Instruct | Trinity Mini |
|---|---|---|---|---|
| Price | 50% | 51 | 48 | 100 |
| Inputs & features | 30% | 100 | 25 | 35 |
| Context window | 20% | 61 | 25 | 25 |
| Overall | 100% | 68/100 | 36/100 | 65/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini 2.5 FlashGoogle | Kimi K2 InstructMoonshot AI | Trinity MiniArcee AI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 140.6 (best) | 139.9 | — |
| ECI rank | #110 of 165 (best) | #112 of 165 | — |
| Price per million tokens | |||
| Input | $0.30 | $0.57 | $0.045 (best) |
| Output | $2.50 | $2.30 | $0.15 (best) |
| Cached input | $0.03 | — | — |
| Blended (3:1) | $0.85 | $1.00 | $0.071 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Google API | Median of 11 providers | Median of 1 providers |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 131,072 tokens | 131,072 tokens |
| Max output | 65,536 tokens | 32,768 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | No | No |
| PDFs | Yes | No | No |
| Audio | Yes | No | No |
| Video | Yes | No | No |
| Reasoning | Yes | No | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | OpenModified MIT | OpenOpenMDW-1.1 |
| API model ID | gemini-2.5-flash | — | — |
| API providers | 32 (best) | 11 | 1 |
| Released | Jun 17, 2025 | Jul 11, 2025 | Dec 1, 2025 |
| Knowledge cutoff | 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.
- Gemini 2.5 Flash$8.00
- Kimi K2 Instruct$10.30
- Trinity Mini$0.75
Which should you choose?
Which is better: Gemini 2.5 Flash, Kimi K2 Instruct or Trinity Mini?
It is close. Our weighted score puts them within 2 points (Gemini 2.5 Flash 68/100, Trinity Mini 65/100, Kimi K2 Instruct 36/100), so choose by what matters most for your work: Trinity Mini on price and Gemini 2.5 Flash for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Gemini 2.5 Flash, Kimi K2 Instruct or Trinity Mini?
Trinity Mini is cheaper at $0.045 input / $0.15 output per million tokens (median across 1 API provider). Gemini 2.5 Flash costs $0.30 input / $2.50 output per million tokens (official Google API price); Kimi K2 Instruct costs $0.57 input / $2.30 output per million tokens (median across 11 API providers). At a typical mix of three input tokens to one output token, that is $0.071 per million tokens for Trinity Mini versus $0.85 for Gemini 2.5 Flash (12× as much) and $1.00 for Kimi K2 Instruct (14× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Gemini 2.5 Flash has an ECI of 140.6, Kimi K2 Instruct has an ECI of 139.9 and Trinity Mini has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 2.5 Flash, Kimi K2 Instruct and Trinity Mini yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Gemini 2.5 Flash has the largest context window at 1,048,576 tokens, against 131,072 for Kimi K2 Instruct and 131,072 for Trinity Mini. Maximum output per response: Gemini 2.5 Flash up to 65,536, Kimi K2 Instruct up to 32,768, Trinity Mini up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Gemini 2.5 Flash accepts text, images, PDFs, audio and video; Kimi K2 Instruct accepts text; Trinity Mini accepts text. Gemini 2.5 Flash handles the widest range of inputs.
Are any of these open source?
Kimi K2 Instruct and Trinity Mini publishes its weights (Modified MIT and OpenMDW-1.1) and can be self-hosted; Gemini 2.5 Flash is proprietary.
Which is newer?
Trinity Mini is the newest, released Dec 1, 2025. Kimi K2 Instruct came out Jul 11, 2025; Gemini 2.5 Flash came out Jun 17, 2025. Knowledge cutoff: Gemini 2.5 Flash 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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