Gemini 3 Pro Preview vs GPT-5.2 vs Kimi K2.7 Code Highspeed
Gemini 3 Pro Preview comes out ahead, 52 to 44 and 39 on our weighted score, though Kimi K2.7 Code Highspeed is 24% cheaper per token.
- Our pick
GoogleGemini 3 Pro Preview
52/100- ECI153.0
- Price$2.00 / $12.00
- Context1.05M
OpenAIGPT-5.2
39/100- ECI153.5
- Price$1.75 / $14.00
- Context400K
Moonshot AIKimi K2.7 Code Highspeed
44/100- ECI—
- Price$1.90 / $8.00
- Context262K
Gemini 3 Pro Preview is our pick
Gemini 3 Pro Preview is the better all-round choice, scoring 52/100 against Kimi K2.7 Code Highspeed (44) and GPT-5.2 (39). It leads on inputs & features and context window. Kimi K2.7 Code Highspeed wins on price. 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 priceKimi K2.7 Code HighspeedKimi K2.7 Code Highspeed $3.42 · Gemini 3 Pro Preview $4.50 · GPT-5.2 $4.81 per 1M tokens (3:1 blend)
- Longest contextGemini 3 Pro PreviewGemini 3 Pro Preview 1,048,576 · GPT-5.2 400,000 · Kimi K2.7 Code Highspeed 262,144 tokens
- Widest inputsGemini 3 Pro PreviewGemini 3 Pro Preview: Text, Images, PDFs, Audio, Video · GPT-5.2: Text, Images · Kimi K2.7 Code Highspeed: Text, Images, Video
- Self-hostingKimi K2.7 Code HighspeedPublishes downloadable weights
| Measure | Weight | Gemini 3 Pro Preview | GPT-5.2 | Kimi K2.7 Code Highspeed |
|---|---|---|---|---|
| Price | 50% | 19 | 18 | 25 |
| Inputs & features | 30% | 100 | 70 | 80 |
| Context window | 20% | 61 | 44 | 37 |
| Overall | 100% | 52/100 | 39/100 | 44/100 |
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 Pro PreviewGoogle | GPT-5.2OpenAI | Kimi K2.7 Code HighspeedMoonshot AI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 153.0 | 153.5 (best) | — |
| ECI rank | #39 of 148 | #38 of 148 (best) | — |
| GPQA DiamondGraduate-level science questions | 92.6% (best) | 91.4% | — |
| FrontierMath Tiers 1–3Research-level mathematics | — | 67.4% | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 91.4% | 96.1% (best) | — |
| SWE-bench VerifiedFixing real GitHub issues | 72.9% | 73.8% (best) | — |
| SimpleQA VerifiedShort factual questions | — | 37.1% | — |
| Price per million tokens | |||
| Input | $2.00 | $1.75 (best) | $1.90 |
| Output | $12.00 | $14.00 | $8.00 (best) |
| Cached input | — | $0.175 | — |
| Blended (3:1) | $4.50 | $4.81 | $3.42 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 2 providers | Official OpenAI API | Median of 11 providers |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 400,000 tokens | 262,144 tokens |
| Max output | 65,536 tokens | 128,000 tokens | 262,144 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | Yes | No | No |
| Audio | Yes | No | No |
| Video | Yes | No | Yes |
| Reasoning | Yes | Yeslow · medium · high · xhigh | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | — | gpt-5.2 | — |
| API providers | 3 | 21 (best) | 11 |
| Released | Nov 18, 2025 | Dec 11, 2025 | Jun 12, 2026 |
| Knowledge cutoff | Jan 2025 | Aug 31, 2025 | 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 Pro Preview$44.00
- GPT-5.2$45.50
- Kimi K2.7 Code Highspeed$35.00
Which should you choose?
Which is better: Gemini 3 Pro Preview, GPT-5.2 or Kimi K2.7 Code Highspeed?
Gemini 3 Pro Preview is the better all-round choice, scoring 52/100 against Kimi K2.7 Code Highspeed (44) and GPT-5.2 (39). It leads on inputs & features and context window. Kimi K2.7 Code Highspeed wins on price. 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 Pro Preview, GPT-5.2 or Kimi K2.7 Code Highspeed?
Kimi K2.7 Code Highspeed is cheaper at $1.90 input / $8.00 output per million tokens (median across 11 API providers). Gemini 3 Pro Preview costs $2.00 input / $12.00 output per million tokens (median across 2 API providers); GPT-5.2 costs $1.75 input / $14.00 output per million tokens (official OpenAI API price). At a typical mix of three input tokens to one output token, that is $3.42 per million tokens for Kimi K2.7 Code Highspeed versus $4.50 for Gemini 3 Pro Preview (1.3× as much) and $4.81 for GPT-5.2 (1.4× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Gemini 3 Pro Preview has an ECI of 153.0, GPT-5.2 has an ECI of 153.5 and Kimi K2.7 Code Highspeed has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Kimi K2.7 Code Highspeed 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 3 Pro Preview has the largest context window at 1,048,576 tokens, against 400,000 for GPT-5.2 and 262,144 for Kimi K2.7 Code Highspeed. Maximum output per response: Gemini 3 Pro Preview up to 65,536, GPT-5.2 up to 128,000, Kimi K2.7 Code Highspeed up to 262,144 tokens.
Which can read images, PDFs, audio or video?
Gemini 3 Pro Preview accepts text, images, PDFs, audio and video; GPT-5.2 accepts text and images; Kimi K2.7 Code Highspeed accepts text, images and video. Gemini 3 Pro Preview handles the widest range of inputs.
Are any of these open source?
Kimi K2.7 Code Highspeed publishes its weights and can be self-hosted; Gemini 3 Pro Preview and GPT-5.2 is proprietary.
Which is newer?
Kimi K2.7 Code Highspeed is the newest, released Jun 12, 2026. GPT-5.2 came out Dec 11, 2025; Gemini 3 Pro Preview came out Nov 18, 2025. Knowledge cutoff: Gemini 3 Pro Preview Jan 2025, GPT-5.2 Aug 31, 2025, Kimi K2.7 Code Highspeed 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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