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Claude Opus 4.8 vs Kimi K2.6

At a glance
AnthropicClaude Opus 4.8

Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.

891M ctx$5.00/$25.00 per M#4/92
MoonshotAIKimi K2.6

MoonshotAI's next-generation multimodal model built for long-horizon coding and multi-agent orchestration.

83262K ctx$0.68/$3.41 per M#17/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
AnthropicClaude Opus 4.8
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Smarter
Capability
CapabilityECI89.2
Reasoning & Knowledge
Graduate Science91.0%Factual Recall39.5%
Math
Competition Math98.3%Research Math47.2%
Coding
Real-World Coding88.6%
Agentic
Novel Reasoning72.1%
MoonshotAIKimi K2.6
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI82.9
Reasoning & Knowledge
Graduate Science90.8%Factual Recall38.7%
Math
Competition Math96.1%Research Math39.0%
Coding
Real-World Coding76.7%
Agentic
Novel Reasoning—
Specs
AnthropicClaude Opus 4.8
1M
Context
128K
Max output
May 2026
Released
MoonshotAIKimi K2.6
262K
Context
128K
Max output
Apr 2026
Released
Capabilities
AnthropicClaude Opus 4.8
Vision
Audio
Reasoning
MoonshotAIKimi K2.6
Vision
Audio
Reasoning
Pricing
AnthropicClaude Opus 4.8
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
MoonshotAIKimi K2.6
Live pricing, shown before you run
Input$0.68/M tokens
Output$3.41/M tokens
Cache read$0.34/M tokens
Chat with Claude Opus 4.8Go to model
Chat with Kimi K2.6Go to model
Frequently Asked Questions: Claude Opus 4.8 vs Kimi K2.6▼

Which is better, Claude Opus 4.8 or Kimi K2.6?

▼

Based on the Capability Index, Claude Opus 4.8 scores higher (89.2 vs 82.9). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Opus 4.8 or Kimi K2.6?

▼

Kimi K2.6 has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. Kimi K2.6: $0.68 input / $3.41 output.

Which has a larger context window, Claude Opus 4.8 or Kimi K2.6?

▼

Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs Kimi K2.6 at 262K tokens.

Do both Claude Opus 4.8 and Kimi K2.6 support vision?

▼

Yes, both Claude Opus 4.8 and Kimi K2.6 support vision/image input.

Which has better coding performance, Claude Opus 4.8 or Kimi K2.6?

▼

Claude Opus 4.8 scores higher on SWE-bench Verified: Claude Opus 4.8 resolves 89% vs Kimi K2.6 at 77%.

What are the key differences between Claude Opus 4.8 and Kimi K2.6?

▼

Key differences: Claude Opus 4.8 has a notably higher capability index (6.3 point gap); Kimi K2.6 is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Opus 4.8 and Kimi K2.6 for free on idapt.app to see which performs better for your specific needs.

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