Beam 1.0 501B A23B vs Solar Pro 3
Solar Pro 3 costs 1.8x less per output token than Beam 1.0 501B A23B ($0.60 vs $1.10 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $1.10
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.60
Beam 1.0 501B A23B or Solar Pro 3: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Beam 1.0 501B A23B for a larger context window (1.05M against 131K tokens).
No benchmark has tested both yet. Beam 1.0 501B A23B has results on LMArena WebDev, LMArena Text: coding and LMArena Text: software and IT; Solar Pro 3 on AA Coding Index, SciCode and Terminal-Bench Hard (Artificial Analysis run). Compare them on price and context instead.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Solar Pro 3 has a AA Intelligence Index result, 7.8.
Directional only
Agentic work
AA Agentic Index
No call
Only Solar Pro 3 has a AA Agentic Index result, 1.4.
Directional only
Web design
Design Arena: websites
No call
Only Beam 1.0 501B A23B has a Design Arena: websites result, 1250.
Directional only
Long documents
Listed context window
Beam 1.0 501B A23B
Beam 1.0 501B A23B takes 1.05M tokens against 131K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Solar Pro 3
Beam 1.0 501B A23B $0.0009, Solar Pro 3 $0.0004 per turn.
List prices
At a glance
- Coding index
- Beam 1.0 501B A23B not benchmarked, Solar Pro 3 not benchmarked.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- Beam 1.0 501B A23B $1.10 against Solar Pro 3 $0.60 per million output tokens, 1.8x apart.
- Context window
- Beam 1.0 501B A23B takes 1.05M tokens, Solar Pro 3 131K.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
CodingDirectional onlySix of these boards feed the Vibe Coding Index8 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| LMArena WebDev | 1437 | Not measured | Only Beam 1.0 501B A23B measured |
| AA Coding Index | Not measured | 16.2 | Only Solar Pro 3 measured |
| SciCode | Not measured | 25.5% | Only Solar Pro 3 measured |
| Terminal-Bench Hard (Artificial Analysis run) | Not measured | 7.6% | Only Solar Pro 3 measured |
| LMArena Text: coding | 1473 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: software and IT | 1461 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena WebDev: React | 1443 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena WebDev: HTML | 1436 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 31 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 7.8 | Only Solar Pro 3 measured |
| Neither model has a result on the other 1 board here | |||
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 1.4 | Only Solar Pro 3 measured |
| τ²-Bench Telecom | Not measured | 86.3% | Only Solar Pro 3 measured |
| Neither model has a result on the other 39 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index5 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | Not measured | 72.4% | Only Solar Pro 3 measured |
| Humanity's Last Exam (Artificial Analysis run) | Not measured | 10.3% | Only Solar Pro 3 measured |
| LMArena Text: hard prompts | 1442 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: expert | 1447 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: hard prompts in English | 1451 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 17 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| LMArena Text: math | 1459 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: mathematical work | 1475 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 11 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index4 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| LMArena Text: science | 1430 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: medicine and healthcare | 1376 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: legal and government | 1433 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: business and finance | 1430 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 14 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| Design Arena: websites | 1250 | Not measured | Only Beam 1.0 501B A23B measured |
| Design Arena: game dev | 1224 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 7 boards here | |||
GeneralDirectional onlyPublic boards, shown as published, kept out of the index14 boards measured
| Benchmark | Beam 1.0 501B A23B | Solar Pro 3 | Leader |
|---|---|---|---|
| IFBench | Not measured | 71.2% | Only Solar Pro 3 measured |
| Long context reasoning (AA-LCR) | Not measured | 32.3% | Only Solar Pro 3 measured |
| LMArena Text | 1425 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: instruction following | 1430 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: creative writing | 1390 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: English | 1436 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: non-English | 1413 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: Chinese | 1424 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: French | 1461 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: Russian | 1412 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: multi-turn | 1414 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: longer queries | 1429 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: writing and language | 1400 | Not measured | Only Beam 1.0 501B A23B measured |
| LMArena Text: entertainment and media | 1399 | Not measured | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 32 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Solar Pro 3 costs less
Repository review
50K input + 3K output tokens
Solar Pro 3 costs less
Agent loop
200K input + 10K output tokens
Solar Pro 3 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Reflection Beam 1.0 501B A23B | Upstage Solar Pro 3 |
|---|---|---|
| Maker | Reflection | Upstage |
| Weights | Open weights | No public weights listed |
| Released | October 16, 2026 | January 27, 2026 |
| Context window | 1.05M | 131K |
| Input $/Mtok | $0.35 | $0.15 |
| Output $/Mtok | $1.10 | $0.60 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Beam 1.0 501B A23B better than Solar Pro 3 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Beam 1.0 501B A23B for a larger context window (1.05M against 131K tokens).
Which is cheaper, Beam 1.0 501B A23B or Solar Pro 3?
Beam 1.0 501B A23B costs $0.35 per million input tokens and $1.10 per million output tokens; Solar Pro 3 costs $0.15 and $0.60. Cost per solved task is known for neither of them.
Which has the bigger context window, Beam 1.0 501B A23B or Solar Pro 3?
Beam 1.0 501B A23B, with 1.05M tokens against 131K.
Has any benchmark tested both Beam 1.0 501B A23B and Solar Pro 3?
No benchmark has tested both yet. Beam 1.0 501B A23B has results on LMArena WebDev, LMArena Text: coding and LMArena Text: software and IT; Solar Pro 3 on AA Coding Index, SciCode and Terminal-Bench Hard (Artificial Analysis run). Compare them on price and context instead. Data as of October 22, 2026.