Gemini 3.1 Flash Lite vs Mercury Edit 2 vs Trinity Large Thinking
Gemini 3.1 Flash Lite comes out ahead, 73 to 55 and 35 on our weighted score, though Mercury Edit 2 is 33% cheaper per token.
- Our pick
GoogleGemini 3.1 Flash Lite
73/100- ECI—
- Price$0.25 / $1.50
- Context1.05M
InceptionMercury Edit 2
35/100- ECI—
- Price$0.25 / $0.75
- Context32K
Arcee AITrinity Large Thinking
55/100- ECI—
- Price$0.25 / $0.80
- Context524K
Gemini 3.1 Flash Lite is our pick
Gemini 3.1 Flash Lite is the better all-round choice, scoring 73/100 against Trinity Large Thinking (55) and Mercury Edit 2 (35). It leads on inputs & features and context window. 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 priceMercury Edit 2Mercury Edit 2 $0.375 · Trinity Large Thinking $0.388 · Gemini 3.1 Flash Lite $0.563 per 1M tokens (3:1 blend)
- Longest contextGemini 3.1 Flash LiteGemini 3.1 Flash Lite 1,048,576 · Trinity Large Thinking 524,288 · Mercury Edit 2 32,000 tokens
- Widest inputsGemini 3.1 Flash LiteGemini 3.1 Flash Lite: Text, Images, PDFs, Audio, Video · Mercury Edit 2: Text · Trinity Large Thinking: Text
- Self-hostingTrinity Large ThinkingPublishes downloadable weights (OpenMDW-1.1)
| Measure | Weight | Gemini 3.1 Flash Lite | Mercury Edit 2 | Trinity Large Thinking |
|---|---|---|---|---|
| Price | 50% | 62 | 70 | 69 |
| Inputs & features | 30% | 100 | 0 | 35 |
| Context window | 20% | 61 | 0 | 49 |
| Overall | 100% | 73/100 | 35/100 | 55/100 |
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 3.1 Flash LiteGoogle | Mercury Edit 2Inception | Trinity Large ThinkingArcee AI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.25 | $0.25 | $0.25 |
| Output | $1.50 | $0.75 (best) | $0.80 |
| Cached input | $0.025 (best) | $0.025 (best) | $0.06 |
| Blended (3:1) | $0.563 | $0.375 (best) | $0.388 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Google API | Official Inception API | Official Arcee API |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 32,000 tokens | 524,288 tokens |
| Max output | 65,536 tokens | 8,192 tokens | 262,144 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 | Yesminimal · low · medium · high | No | Yes |
| Tool calling | Yes | No | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | OpenOpenMDW-1.1 |
| API model ID | gemini-3.1-flash-lite | mercury-edit-2 | trinity-large-thinking |
| API providers | 23 (best) | 1 | 6 |
| Released | May 7, 2026 | Mar 30, 2026 | Apr 1, 2026 |
| 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 3.1 Flash Lite$5.50
- Mercury Edit 2$4.00
- Trinity Large Thinking$4.10
Which should you choose?
Which is better: Gemini 3.1 Flash Lite, Mercury Edit 2 or Trinity Large Thinking?
Gemini 3.1 Flash Lite is the better all-round choice, scoring 73/100 against Trinity Large Thinking (55) and Mercury Edit 2 (35). It leads on inputs & features and context window. 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 3.1 Flash Lite, Mercury Edit 2 or Trinity Large Thinking?
Mercury Edit 2 is cheaper at $0.25 input / $0.75 output per million tokens (official Inception API price). Trinity Large Thinking costs $0.25 input / $0.80 output per million tokens (official Arcee API price); Gemini 3.1 Flash Lite costs $0.25 input / $1.50 output per million tokens (official Google API price). At a typical mix of three input tokens to one output token, that is $0.375 per million tokens for Mercury Edit 2 versus $0.388 for Trinity Large Thinking (1× as much) and $0.563 for Gemini 3.1 Flash Lite (1.5× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Gemini 3.1 Flash Lite has not been scored yet, Mercury Edit 2 has not been scored yet and Trinity Large Thinking has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 3.1 Flash Lite, Mercury Edit 2 and Trinity Large Thinking yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Note that Mercury Edit 2 does not support tool calling, which most coding agents need.
Which has the bigger context window?
Gemini 3.1 Flash Lite has the largest context window at 1,048,576 tokens, against 524,288 for Trinity Large Thinking and 32,000 for Mercury Edit 2. Maximum output per response: Gemini 3.1 Flash Lite up to 65,536, Mercury Edit 2 up to 8,192, Trinity Large Thinking up to 262,144 tokens.
Which can read images, PDFs, audio or video?
Gemini 3.1 Flash Lite accepts text, images, PDFs, audio and video; Mercury Edit 2 accepts text; Trinity Large Thinking accepts text. Gemini 3.1 Flash Lite handles the widest range of inputs.
Are any of these open source?
Trinity Large Thinking publishes its weights (OpenMDW-1.1) and can be self-hosted; Gemini 3.1 Flash Lite and Mercury Edit 2 is proprietary.
Which is newer?
Gemini 3.1 Flash Lite is the newest, released May 7, 2026. Trinity Large Thinking came out Apr 1, 2026; Mercury Edit 2 came out Mar 30, 2026. Knowledge cutoff: Gemini 3.1 Flash Lite 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 Oct 4, 2026.
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