Compare

Kimi-K2.6 vs GPT Image 2.5 Sunburst

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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Kimi-K2.6
moonshot/kimi-k2.6
GPT Image 2.5 Sunburst
openai/gpt-image-2.5-sunburst
Provider
Moonshot
OpenAI
Family
Kimi
Modality
text
image
Context window
262,144 tok
Max output
16,384 tok
Released
2026-04-20
2026-09-10
License
Open-weight
Proprietary
Input price
$0.950 /1M
Output price
$4.00 /1M
Cache read
$0.160 /1M
Per image
$0.030 /img
Tools
yes
Streaming
yes
Vision
yes
JSON mode
yes
Reasoning
yes
Prompt caching
yes
Batch API
Try it
Open in playground →
View model →
Kimi-K2.6
moonshot/kimi-k2.6
Full spec →

Kimi K2.6 is a frontier-scale open-source 1T parameter model with a 262.1k context window, multi-turn tool calling, vision inputs, and structured outputs for agentic workloads.

Strengths
  • Frontier-scale 1T parameters, open-weight
  • ~10× cheaper than Opus
  • Multi-turn tool calling + vision
Use cases
Code agentsLong-document reasoningCost-conscious production
GPT Image 2.5 Sunburst
openai/gpt-image-2.5-sunburst
Full spec →

OpenAI's most capable image generation and editing model. It accepts text and image inputs and produces images with low, medium, high, xhigh, max, and auto quality settings.

Strengths
  • Text-to-image generation
  • Creative control
Use cases
Marketing assetsProduct mockupsConcept art

Benchmarks

Kimi-K2.6
GPT Image 2.5 Sunburst
HumanEval
92.7
SWE-Bench
68.2

Source: each provider's published benchmarks. Higher is better. Run an eval to compare on your own data.

Compare with another

Kimi-K2.6 vs Kimi-K2.7-Code
moonshot/kimi-k2.6 · moonshot/kimi-k2.7-code
Claude Fable 5.1 vs GPT Image 2.5 Sunburst
anthropic/claude-fable-5.1 · openai/gpt-image-2.5-sunburst
Claude Fable 5.1 vs Kimi-K2.6
anthropic/claude-fable-5.1 · moonshot/kimi-k2.6
Gemini 3.8 Flash vs GPT Image 2.5 Sunburst
google/gemini-3.8-flash · openai/gpt-image-2.5-sunburst
Gemini 3.8 Flash vs Kimi-K2.6
google/gemini-3.8-flash · moonshot/kimi-k2.6
Claude Opus 5 vs GPT Image 2.5 Sunburst
anthropic/claude-opus-5 · openai/gpt-image-2.5-sunburst
Claude Opus 5 vs Kimi-K2.6
anthropic/claude-opus-5 · moonshot/kimi-k2.6
Glm-5.3 vs GPT Image 2.5 Sunburst
zai-org/glm-5.3 · openai/gpt-image-2.5-sunburst
Glm-5.3 vs Kimi-K2.6
zai-org/glm-5.3 · moonshot/kimi-k2.6
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Kimi-K2.6
client.chat.completions.create(
    model="moonshot/kimi-k2.6",
    messages=[{"role":"user","content":"hello"}],
)

# GPT Image 2.5 Sunburst
client.chat.completions.create(
    model="openai/gpt-image-2.5-sunburst",
    messages=[{"role":"user","content":"hello"}],
)
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