Solar Open 2
Solar Open 2UpstageOpen weightsReasoningReleased Jul 22, 2026
Overall score
—
Not enough evidence to rank yet
Context window
1M
1,000,000 tokens
Price per 1M tokens
— in · — out
No price listed
Blended price
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3:1 input:output tokens
Output speed
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Not measured yet
Benchmark results (12)
As reported in system cards, papers and public evaluations. Position compares this model with every other model reporting the same benchmark.
Agentic & tool use
| MCP Atlas | 58.2 | #30 of 42 |
| APEX-Agents | 16.6 | #8 of 8 |
Coding
| SWE-bench Verified | 70.4 | #62 of 98 |
| LiveCodeBench v6 | 92.4 | #2 of 46 |
Knowledge
| MMLU-Pro | 86.2 | #12 of 67 |
| HLE w/o tools | 28.8 | #33 of 43 |
Math
| AIME26 | 95.7 | #9 of 29 |
| HMMT Feb 2026 | 93.9 | #4 of 24 |
Instruction following
| IFBench | 80.0 | #9 of 42 |
Pricing by source
USD per 1M tokens.
| Source | Input | Output | Cached in |
|---|---|---|---|
| List price | — | — | — |
Upstage publishes Solar Open 2 under Upstage Solar License for self-hosting and does not publish a first-party hosted token rate for this exact checkpoint. We represent the open-weight row as self-host/free-per-token before infrastructure costs.
Speed
Measured by us through OpenRouter (median of trials).
Not available on OpenRouter, so we cannot measure it yet.