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Comparison · 2 models · Updated Oct 4, 2026

Gemini Robotics-ER 1.6 Preview vs Kimi K2.6

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. 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

  2. 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

  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 PreviewGemini Robotics-ER 1.6 Preview: Text, Images, Audio, Video · Kimi K2.6: Text, Images, Video
  • Self-hostingKimi K2.6Publishes downloadable weights
How the score is built
MeasureWeightGemini Robotics-ER 1.6 PreviewKimi K2.6
Price50%3639
Inputs & features30%9080
Context window20%2437
Overall100%50/10051/100

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.

Gemini Robotics-ER 1.6 Preview vs Kimi K2.6 specifications side by side
SpecificationGemini Robotics-ER 1.6 PreviewGoogleKimi K2.6Moonshot AI
Capability
Capabilities Index (ECI)—151.1
ECI rank—#45 of 148
GPQA DiamondGraduate-level science questions—90.8%
FrontierMath Tiers 1–3Research-level mathematics—57.2%
OTIS Mock AIME 2024–2025Competition mathematics—96.1%
SWE-bench VerifiedFixing real GitHub issues—76.7%
SimpleQA VerifiedShort factual questions—34.9%
Price per million tokens
Input$1.00$0.95 (best)
Output$5.00$4.00 (best)
Cached input—$0.16
Blended (3:1)$2.00$1.71 (best)
Long-context rateSame rateSame rate
Price sourceMedian of 1 providersOfficial Moonshot AI API
Limits
Context window131,072 tokens262,144 tokens (best)
Max output65,536 tokens262,144 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioYesNo
VideoYesYes
ReasoningYesYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryOpen
API model ID—kimi-k2.6
API providers146 (best)
ReleasedApr 14, 2026Apr 21, 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.

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

Which should you choose?

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

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, Gemini Robotics-ER 1.6 Preview or Kimi K2.6?

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. Gemini Robotics-ER 1.6 Preview has not been scored yet and Kimi K2.6 has an ECI of 151.1.

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: Gemini Robotics-ER 1.6 Preview up to 65,536, Kimi K2.6 up to 262,144 tokens.

Which can read images, PDFs, audio or video?

Gemini Robotics-ER 1.6 Preview accepts text, images, audio and video; Kimi K2.6 accepts text, images 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: Gemini Robotics-ER 1.6 Preview Jan 2025, Kimi K2.6 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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