Standard Compute
Model comparison 2026

DeepSeek V4 Flash vs GPT-6 Astra

DeepSeek V4 Flash
DeepSeek · Budget · Open weights
$0.12/1M · 1.0M ctx
GPT-6 Astra
OpenAI · Frontier · Proprietary
$22/1M · 1.1M 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
DeepSeek V4 Flash
GPT-6 Astra
Maker
DeepSeek
OpenAI
Blended price / 1M
$0.12
$22
Input / output
$0.09 in · $0.18 out / 1M tokens
$10 in · $50 out / 1M tokens
Context window
1.0M
1.1M
Open weights
Yes
No
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
7.7
9.3
Agentic Ability
7.1
9.5
Speed
9.1
6.7
Value for money
9.4
4.0
Reliability
8.7
9.3

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

Verdict: DeepSeek V4 Flash or GPT-6 Astra?

Updated 2026-10-13

Choose DeepSeek V4 Flash if you want existing setups that still call the deepseek-v4-flash name. Choose GPT-6 Astra if you want the hardest coding and research tasks in OpenAI-based stacks, where cost is secondary.

In our editorial scoring, GPT-6 Astra leads in 3 of five dimensions (output quality, agentic ability and reliability), while DeepSeek V4 Flash leads in 2. On price, DeepSeek V4 Flash runs about $0.12 per 1M tokens (blended) and is open-weight; GPT-6 Astra is about $22 and proprietary.

Where DeepSeek V4 Flash falls short
  • Retired as a DeepSeek API name; calls run V4.1 Flash instead
  • Third-party hosts of the original weights vary in price and speed
Full DeepSeek V4 Flash breakdown →
Where GPT-6 Astra falls short
  • About six times GPT-6.1 Sol's cost per request for the same tbench.ai Terminal-Bench 4.0 score
  • About 62 output tokens/s at max effort, per Artificial Analysis
Full GPT-6 Astra breakdown →

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