Standard Compute
Model comparison 2026

GPT-6 Astra vs Kimi K2.6

GPT-6 Astra
OpenAI · Frontier · Proprietary
$22/1M · 1.1M ctx
Kimi K2.6
Moonshot AI · Frontier · Open weights
$1.48/1M · 262K ctx

Community vote

Pick a winner in each dimension. You can change your vote any time.

Output Quality
Correctness and depth of what it produces
Agentic Ability
Tool calls, instruction-following, and multi-step tasks
Speed
Tokens per second and time-to-first-token
Value for money
How much capability you get per dollar
Reliability
Consistent results: fewer refusals, loops and format breaks

Specs and pricing side by side

Spec
GPT-6 Astra
Kimi K2.6
Maker
OpenAI
Moonshot AI
Blended price / 1M
$22
$1.48
Input / output
$10 in · $50 out / 1M tokens
$0.65 in · $3.41 out / 1M tokens
Context window
1.1M
262K
Open weights
No
Yes
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
9.7
8.6
Agentic Ability
9.7
8.8
Speed
6.8
7.6
Value for money
6.9
9.2
Reliability
9.3
9.0

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: GPT-6 Astra or Kimi K2.6?

Updated 2026-10-13

Choose GPT-6 Astra if you want the hardest coding and research tasks in OpenAI-based stacks, where cost is secondary. Choose Kimi K2.6 if you want a flagship-feel open-weight generalist.

In our editorial scoring, GPT-6 Astra leads in 3 of five dimensions (output quality, agentic ability and reliability), while Kimi K2.6 leads in 2. On price, GPT-6 Astra runs about $22 per 1M tokens (blended) and is proprietary; Kimi K2.6 is about $1.48 and open-weight.

Where GPT-6 Astra falls short
  • Five times GPT-6.1 Sol's price for a small measured gain
  • Slow: about 66 output tokens/s at max effort
Full GPT-6 Astra breakdown →
Where Kimi K2.6 falls short
  • A step behind the closed flagships
  • Pricier than the cheapest open models
Full Kimi K2.6 breakdown →

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