ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Kimi K2.6 vs Gemini Robotics-ER 1.6 Preview

Too close to call on our weighted score (Kimi K2.6 51, Gemini Robotics-ER 1.6 Preview 50). The right pick depends on what you value most.

  1. Moonshot AI

    Kimi K2.6

    Released Apr 21, 2026

    51/100
    • ECI151.1
    • Price$0.95 / $4.00
    • Context262K
    Full specs Remove Kimi K2.6

  2. Google

    Gemini Robotics-ER 1.6 Preview

    Released Apr 14, 2026

    50/100
    • ECI—
    • Price$1.00 / $5.00
    • Context131K
    Full specs Remove Gemini Robotics-ER 1.6 Preview

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Too close to call

It is close. Our weighted score puts them within 1 points (Kimi K2.6 51/100, Gemini Robotics-ER 1.6 Preview 50/100), so choose by what matters most for your work: Kimi K2.6 on price and Kimi K2.6 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 priceKimi K2.6Kimi K2.6 $1.71 · Gemini Robotics-ER 1.6 Preview $2.00 per 1M tokens (3:1 blend)
  • Longest contextKimi K2.6Kimi K2.6 262,144 · Gemini Robotics-ER 1.6 Preview 131,072 tokens
  • Widest inputsGemini Robotics-ER 1.6 PreviewKimi K2.6: Text, Images, Video · Gemini Robotics-ER 1.6 Preview: Text, Images, Audio, Video
  • Self-hostingKimi K2.6Publishes downloadable weights
How the score is built
MeasureWeightKimi K2.6Gemini Robotics-ER 1.6 Preview
Price50%3936
Inputs & features30%8090
Context window20%3724
Overall100%51/10050/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Kimi K2.6 vs Gemini Robotics-ER 1.6 Preview specifications side by side
SpecificationKimi K2.6Moonshot AIGemini Robotics-ER 1.6 PreviewGoogle
Capability
Capabilities Index (ECI)151.1—
ECI rank#45 of 148—
GPQA DiamondGraduate-level science questions90.8%—
FrontierMath Tiers 1–3Research-level mathematics57.2%—
OTIS Mock AIME 2024–2025Competition mathematics96.1%—
SWE-bench VerifiedFixing real GitHub issues76.7%—
SimpleQA VerifiedShort factual questions34.9%—
Price per million tokens
Input$0.95 (best)$1.00
Output$4.00 (best)$5.00
Cached input$0.16—
Blended (3:1)$1.71 (best)$2.00
Long-context rateSame rateSame rate
Price sourceOfficial Moonshot AI APIMedian of 1 providers
Limits
Context window262,144 tokens (best)131,072 tokens
Max output262,144 tokens (best)65,536 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioNoYes
VideoYesYes
ReasoningYesYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsOpenProprietary
API model IDkimi-k2.6—
API providers46 (best)1
ReleasedApr 21, 2026Apr 14, 2026
Knowledge cutoffJan 2025Jan 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Kimi K2.6$17.50
  • Gemini Robotics-ER 1.6 Preview$20.00
04 — Questions

Which should you choose?

Which is better: Kimi K2.6 or Gemini Robotics-ER 1.6 Preview?

It is close. Our weighted score puts them within 1 points (Kimi K2.6 51/100, Gemini Robotics-ER 1.6 Preview 50/100), so choose by what matters most for your work: Kimi K2.6 on price and Kimi K2.6 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, Kimi K2.6 or Gemini Robotics-ER 1.6 Preview?

Kimi K2.6 is cheaper at $0.95 input / $4.00 output per million tokens (official Moonshot AI API price). Gemini Robotics-ER 1.6 Preview costs $1.00 input / $5.00 output per million tokens (median across 1 API provider). At a typical mix of three input tokens to one output token, that is $1.71 per million tokens for Kimi K2.6 versus $2.00 for Gemini Robotics-ER 1.6 Preview (1.2× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Kimi K2.6 has an ECI of 151.1 and Gemini Robotics-ER 1.6 Preview has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Gemini Robotics-ER 1.6 Preview yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

Kimi K2.6 has the largest context window at 262,144 tokens, against 131,072 for Gemini Robotics-ER 1.6 Preview. Maximum output per response: Kimi K2.6 up to 262,144, Gemini Robotics-ER 1.6 Preview up to 65,536 tokens.

Which can read images, PDFs, audio or video?

Kimi K2.6 accepts text, images and video; Gemini Robotics-ER 1.6 Preview accepts text, images, audio and video. Gemini Robotics-ER 1.6 Preview handles the widest range of inputs.

Are any of these open source?

Kimi K2.6 publishes its weights and can be self-hosted; Gemini Robotics-ER 1.6 Preview is proprietary.

Which is newer?

Kimi K2.6 is the newest, released Apr 21, 2026. Gemini Robotics-ER 1.6 Preview came out Apr 14, 2026. Knowledge cutoff: Kimi K2.6 Jan 2025, Gemini Robotics-ER 1.6 Preview 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.

05 — Keep comparing

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