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GPT-6 Astra vs Kimi K3.1 Pro

Find the right model, side by side.

Across 15 shared evaluation tracks, GPT-6 Astra leads on 9, Kimi K3.1 Pro leads on 6, and 0 are tied. These counts describe reported scores within matched setups, not an overall model ranking. At the initially selected providers, input/output prices are $10.00 / $50.00 for GPT-6 Astra and $2.00 / $10.00 for Kimi K3.1 Pro, per million tokens.

Updated: Data as of:
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Model specifications

Specifications for GPT-6 Astra and Kimi K3.1 Pro. Prices and performance use the selected provider offering.
SpecificationsGPT-6 AstraOpenAIKimi K3.1 ProMoonshot AI
Provider
Context sizetokens1,000,0001,000,000
Cutoff date2026-04-30Not reported
Input costUSD / 1M tokens$10.00$2.00
Output costUSD / 1M tokens$50.00$10.00
Max outputtokens128,0001,048,576
LatencyTTFT · seconds365.1273.427
Speedtokens / sec70.56431.249

Benchmark performance

15 shared benchmark comparisons. Versions and setups matched.

GPT-6 AstraKimi K3.1 Pro

GDPval-AA

2.1 ↗
  1. GPT-6 Astra: 1,583.69 Elo
  2. Kimi K3.1 Pro: 1,858.05 Elo