AI model comparison
Beam 1.0 501B A23B vs DeepSeek V4.1 Flash
Side by side comparison of Beam 1.0 501B A23B and DeepSeek V4.1 Flash on pricing, benchmark scores, context window, and more.
Beam 1.0 is Reflection's open-weight reasoning model for coding and long-horizon agentic workflows.
- Input / 1M
- $0.25
- Output / 1M
- $1
- Context
- 1.05M
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture.
- Input / 1M
- $0.05
- Output / 1M
- $0.50
- Context
- 1.05M
Comparing image generators? Compare image models
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
DeepSeek V4.1 Flash
2.9x cheaper for a typical chat
Higher intelligence score
Not available
Not enough benchmark data
Larger context window
Tie
1.05M vs 1.05M tokens
Newer release
Beam 1.0 501B A23B
Released October 16, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
Beam 1.0 501B A23B17.7DeepSeek V4.1 FlashNot availableCoding index
Beam 1.0 501B A23BNot availableDeepSeek V4.1 FlashNot availableAgentic index
Beam 1.0 501B A23BNot availableDeepSeek V4.1 FlashNot availablePricing
Beam 1.0 501B A23B vs DeepSeek V4.1 Flash API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | Beam 1.0 501B A23B | DeepSeek V4.1 Flash |
|---|---|---|
| Input tokensPer 1M tokens | $0.25 | $0.05 |
| Output tokensPer 1M tokens | $1 | $0.50 |
| Cached input (read)Per 1M tokens | $0.05 | $0.01 |
| Cache writePer 1M tokens | Not available | Not available |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
Beam 1.0 501B A23B$1DeepSeek V4.1 Flash$0.34Coding task
30K in, 4K out
Beam 1.0 501B A23B$11.50$5.50 cachedDeepSeek V4.1 Flash$3.35$2.36 cachedLong document summary
150K in, 2K out
Beam 1.0 501B A23B$39.50$9.50 cachedDeepSeek V4.1 Flash$7.75$2.80 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | Beam 1.0 501B A23B | DeepSeek V4.1 Flash |
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Max output | 131K tokens | 944K tokens |
| Input types | Text | Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Max, Extra high, High, Medium, Low | Max, High, Low, None |
| Default reasoning effort | Max | High |
| Release date | October 16, 2026 | September 10, 2026 |
Features
Supported features
API features available for each model.
| Metric | Beam 1.0 501B A23B | DeepSeek V4.1 Flash |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Supported |
| Stop sequences | Supported | Supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
Beam 1.0 501B A23BView full model details- Beam 1.0 501B A23B vs DeepSeek V4.1 Flash 1017
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DeepSeek V4.1 FlashView full model details- DeepSeek V4.1 Flash vs DeepSeek V4.1 Flash 1017
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Our take
DeepSeek V4.1 Flash is 2.9x cheaper for a typical chat. The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Beam 1.0 501B A23B or DeepSeek V4.1 Flash cheaper?
DeepSeek V4.1 Flash is cheaper for a typical chat (2K input tokens and 500 output tokens). DeepSeek V4.1 Flash costs $0.05 per 1M input tokens and $0.50 per 1M output tokens, while Beam 1.0 501B A23B costs $0.25 per 1M input tokens and $1 per 1M output tokens.
Which has a bigger context window, Beam 1.0 501B A23B or DeepSeek V4.1 Flash?
Beam 1.0 501B A23B supports up to 1.05M tokens of context, compared with 1.05M for DeepSeek V4.1 Flash.
Can I use Beam 1.0 501B A23B and DeepSeek V4.1 Flash at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Beam 1.0 501B A23B and DeepSeek V4.1 Flash answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Beam 1.0 501B A23B and DeepSeek V4.1 Flash at the same time. Compare the answers side by side and keep the best one.