Gemini 2.5 Pro vs Kimi K2.7 Code vs o3
Too close to call on our weighted score (Kimi K2.7 Code 64, Gemini 2.5 Pro 63, o3 58). The right pick depends on what you value most.
GoogleGemini 2.5 Pro
63/100- ECI145.3
- Price$1.25 / $10.00
- Context1.05M
Moonshot AIKimi K2.7 Code
64/100- ECI150.0
- Price$0.95 / $4.00
- Context262K
OpenAIo3
58/100- ECI146.9
- Price$2.00 / $8.00
- Context200K
Too close to call
It is close. Our weighted score puts them within 1 points (Kimi K2.7 Code 64/100, Gemini 2.5 Pro 63/100, o3 58/100), so choose by what matters most for your work: Kimi K2.7 Code for raw capability and Gemini 2.5 Pro for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityKimi K2.7 CodeCapabilities Index (ECI): Kimi K2.7 Code 150.0 · o3 146.9 · Gemini 2.5 Pro 145.3
- Lowest priceKimi K2.7 CodeKimi K2.7 Code $1.71 · Gemini 2.5 Pro $3.44 · o3 $3.50 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 ProGemini 2.5 Pro 1,048,576 · Kimi K2.7 Code 262,144 · o3 200,000 tokens
- Widest inputsGemini 2.5 ProGemini 2.5 Pro: Text, Images, PDFs, Audio, Video · Kimi K2.7 Code: Text, Images, Video · o3: Text, Images, PDFs
- Self-hostingKimi K2.7 CodePublishes downloadable weights
| Measure | Weight | Gemini 2.5 Pro | Kimi K2.7 Code | o3 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 72 | 78 | 74 |
| Price | 25% | 24 | 39 | 24 |
| Inputs & features | 15% | 100 | 80 | 80 |
| Context window | 10% | 61 | 37 | 32 |
| Overall | 100% | 63/100 | 64/100 | 58/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini 2.5 ProGoogle | Kimi K2.7 CodeMoonshot AI | o3OpenAI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 145.3 | 150.0 (best) | 146.9 |
| ECI rank | #78 of 148 | #49 of 148 (best) | #63 of 148 |
| GPQA DiamondGraduate-level science questions | 85.3% | 87.9% (best) | 81.8% |
| FrontierMath Tiers 1–3Research-level mathematics | 24.6% | 54.0% (best) | 33.3% |
| OTIS Mock AIME 2024–2025Competition mathematics | 84.7% | 95.6% (best) | 84.4% |
| SWE-bench VerifiedFixing real GitHub issues | 57.6% | — | 62.3% (best) |
| SimpleQA VerifiedShort factual questions | — | 36.5% | 49.4% (best) |
| Price per million tokens | |||
| Input | $1.25 | $0.95 (best) | $2.00 |
| Output | $10.00 | $4.00 (best) | $8.00 |
| Cached input | $0.125 (best) | $0.19 | $0.50 |
| Blended (3:1) | $3.44 | $1.71 (best) | $3.50 |
| Long-context rate | Over 200K: $2.50 / $15.00 | Same rate | Same rate |
| Price source | Official Google API | Official Moonshot AI API | Official OpenAI API |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 262,144 tokens | 200,000 tokens |
| Max output | 65,536 tokens | 262,144 tokens (best) | 100,000 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | Yes | No | Yes |
| Audio | Yes | No | No |
| Video | Yes | Yes | No |
| Reasoning | Yes | Yes | Yeslow · medium · high |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | Proprietary | Open | Proprietary |
| API model ID | gemini-2.5-pro | kimi-k2.7-code | o3 |
| API providers | 22 | 51 (best) | 18 |
| Released | Jun 17, 2025 | Jun 12, 2026 | Apr 16, 2025 |
| Knowledge cutoff | Jan 2025 | Jan 2025 | May 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 Pro$32.50
- Kimi K2.7 Code$17.50
- o3$36.00
Which should you choose?
Which is better: Gemini 2.5 Pro, Kimi K2.7 Code or o3?
It is close. Our weighted score puts them within 1 points (Kimi K2.7 Code 64/100, Gemini 2.5 Pro 63/100, o3 58/100), so choose by what matters most for your work: Kimi K2.7 Code for raw capability and Gemini 2.5 Pro for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Gemini 2.5 Pro, Kimi K2.7 Code or o3?
Kimi K2.7 Code is cheaper at $0.95 input / $4.00 output per million tokens (official Moonshot AI API price). Gemini 2.5 Pro costs $1.25 input / $10.00 output per million tokens (official Google API price); o3 costs $2.00 input / $8.00 output per million tokens (official OpenAI API price). At a typical mix of three input tokens to one output token, that is $1.71 per million tokens for Kimi K2.7 Code versus $3.44 for Gemini 2.5 Pro (2× as much) and $3.50 for o3 (2× as much).
Which scores higher on benchmarks?
Kimi K2.7 Code scores higher on the Capabilities Index (ECI): Kimi K2.7 Code 150.0 (#49 of 148), o3 146.9 (#63 of 148) and Gemini 2.5 Pro 145.3 (#78 of 148). The confidence ranges of the top two overlap (148.1–151.8 vs 144.9–148.6), so treat the gap as small. On individual benchmarks: GPQA Diamond — Kimi K2.7 Code 87.9%, Gemini 2.5 Pro 85.3%, o3 81.8%; FrontierMath Tiers 1–3 — Kimi K2.7 Code 54.0%, o3 33.3%, Gemini 2.5 Pro 24.6%; OTIS Mock AIME 2024–2025 — Kimi K2.7 Code 95.6%, Gemini 2.5 Pro 84.7%, o3 84.4%.
Which is better for coding?
There are no published SWE-bench Verified results for Kimi K2.7 Code yet, so there is no like-for-like coding score. On overall capability, Kimi K2.7 Code 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 Pro has the largest context window at 1,048,576 tokens, against 262,144 for Kimi K2.7 Code and 200,000 for o3. Maximum output per response: Gemini 2.5 Pro up to 65,536, Kimi K2.7 Code up to 262,144, o3 up to 100,000 tokens.
Which can read images, PDFs, audio or video?
Gemini 2.5 Pro accepts text, images, PDFs, audio and video; Kimi K2.7 Code accepts text, images and video; o3 accepts text, images and PDFs. Gemini 2.5 Pro handles the widest range of inputs.
Are any of these open source?
Kimi K2.7 Code publishes its weights and can be self-hosted; Gemini 2.5 Pro and o3 is proprietary.
Which is newer?
Kimi K2.7 Code is the newest, released Jun 12, 2026. Gemini 2.5 Pro came out Jun 17, 2025; o3 came out Apr 16, 2025. Knowledge cutoff: Gemini 2.5 Pro Jan 2025, Kimi K2.7 Code Jan 2025, o3 May 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 Oct 4, 2026.
