GPT-6 Astra vs DeepSeek Flash (4.1)
GPT-6 Astra scores higher on the Models at Work leaderboard (86 vs 70 out of 100). DeepSeek Flash (4.1) is about 38× cheaper per blended million tokens ($0.52 vs $20).
| GPT-6 Astra · OpenAI | DeepSeek Flash (4.1) · DeepSeek | |
|---|---|---|
| Leaderboard rank | #2 | #9 |
| Score (0–100) | 86 | 70 |
| Tier | Frontier | Fast and cheap |
| Price per 1M tokens | $10 in · $50 out | $0.30 in · $1.20 out |
| Context window | 1M | 1M |
| Open weights | No | Not verified |
| Artificial Analysis Intelligence Index | 53 | — |
| Humanity's Last Exam, Diamond (Scale) | 60.6 | — |
| Humanity's Sixth Sense (Scale) | 53.6 | — |
| FrontierMath Erdős (Epoch) | 3% (2 of 68) | — |
| Best for | Hard reasoning, Research-grade analysis, When cost is not the constraint | Cheap coding tiers, Bulk generation, Experiments where data residency is not a constraint |
Choose GPT-6 Astra if…
- you need hard reasoning
- you need research-grade analysis
- you need when cost is not the constraint
The reasoning heavyweight: leads the hardest exams and the cipher-cracking party tricks, and charges like it.
Caveats: Long-context pricing doubles above 272K input tokens. Speed is the lowest of the frontier set in Artificial Analysis' measurement.
Choose DeepSeek Flash (4.1) if…
- you need cheap coding tiers
- you need bulk generation
- you need experiments where data residency is not a constraint
The reason a thousand people argued on Hacker News this week: frontier-adjacent coding for pocket change, with the caveats you would expect.
Caveats: Open-weights status and licence not verified from a primary source at time of writing. Off-peak and peak pricing differ; the cheap numbers are off-peak. Data handling terms should be read before any enterprise use.
What practitioners say
GPT-6 Astra: The launch drew the largest model thread of 2026 on Hacker News, and the stories that followed were about capability rather than cost: an Enigma message unsolved since 2005, a WWI cipher, a driving benchmark.
DeepSeek Flash (4.1): The 'why isn't the industry freaking out' post hit 1,067 points; the most-upvoted replies say the price is real and the coding gap to Opus is also real.
Questions people ask
Which is better, GPT-6 Astra or DeepSeek Flash (4.1)?
GPT-6 Astra scores higher on the Models at Work leaderboard (86 vs 70 out of 100). DeepSeek Flash (4.1) is about 38× cheaper per blended million tokens ($0.52 vs $20).
When should I choose GPT-6 Astra over DeepSeek Flash (4.1)?
Choose GPT-6 Astra for hard reasoning, research-grade analysis, when cost is not the constraint. The reasoning heavyweight: leads the hardest exams and the cipher-cracking party tricks, and charges like it.
When should I choose DeepSeek Flash (4.1) over GPT-6 Astra?
Choose DeepSeek Flash (4.1) for cheap coding tiers, bulk generation, experiments where data residency is not a constraint. The reason a thousand people argued on Hacker News this week: frontier-adjacent coding for pocket change, with the caveats you would expect.
Which is cheaper, GPT-6 Astra or DeepSeek Flash (4.1)?
GPT-6 Astra costs $10 per million input tokens and $50 per million output tokens on OpenAI's list price (OpenAI API pricing, read Oct 10, 2026). DeepSeek Flash (4.1) costs $0.30 per million input tokens and $1.20 per million output tokens on DeepSeek's list price (DeepSeek API pricing, read Oct 10, 2026).
Scores come from the Models at Work leaderboard: Score is 0 to 100: 50% independent evals normalised within this table, 20% price-performance, 15% practitioner sentiment from Signals and community threads, 15% operational fit (context, speed, availability, open weights). Models within three points are a tie in practice. Vendor-published figures are labelled as such and never counted as independent. Prices are vendor list prices where published; blended figures assume three input tokens per output token.