o1 vs Claude Opus 4 vs solar-mini
solar-mini comes out ahead, 52 to 30 and 27 on our weighted score, and it is the cheaper option too.
OpenAIo1
30/100- ECI141.9
- Price$15.00 / $60.00
- Context200K
AnthropicClaude Opus 4
27/100- ECI142.7
- Price$15.00 / $75.00
- Context200K
- Our pick
Upstage
solar-mini
52/100- ECI—
- Price$0.15 / $0.15
- Context33K
solar-mini is our pick
solar-mini is the better all-round choice, scoring 52/100 against o1 (30) and Claude Opus 4 (27). It leads on price. o1 wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest pricesolar-minisolar-mini $0.15 · o1 $26.25 · Claude Opus 4 $30.00 per 1M tokens (3:1 blend)
- Longest contexto1 and Claude Opus 4o1 200,000 · Claude Opus 4 200,000 · solar-mini 32,768 tokens
- Widest inputso1 and Claude Opus 4o1: Text, Images, PDFs · Claude Opus 4: Text, Images, PDFs · solar-mini: Text
- Self-hostingNo open weightsAll three are available only through APIs
| Measure | Weight | o1 | Claude Opus 4 | solar-mini |
|---|---|---|---|---|
| Price | 50% | 0 | 0 | 89 |
| Inputs & features | 30% | 80 | 70 | 25 |
| Context window | 20% | 32 | 32 | 0 |
| Overall | 100% | 30/100 | 27/100 | 52/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | o1OpenAI | Claude Opus 4Anthropic | solar-miniUpstage |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 141.9 | 142.7 (best) | — |
| ECI rank | #92 of 148 | #87 of 148 (best) | — |
| GPQA DiamondGraduate-level science questions | 76.8% (best) | 76.3% | — |
| FrontierMath Tiers 1–3Research-level mathematics | 14.7% | — | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 73.3% (best) | 64.4% | — |
| SWE-bench VerifiedFixing real GitHub issues | — | 70.7% | — |
| SimpleQA VerifiedShort factual questions | 41.1% | — | — |
| Price per million tokens | |||
| Input | $15.00 | $15.00 | $0.15 (best) |
| Output | $60.00 | $75.00 | $0.15 (best) |
| Cached input | $7.50 | — | — |
| Blended (3:1) | $26.25 | $30.00 | $0.15 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official OpenAI API | Median of 5 providers | Official Upstage API |
| Limits | |||
| Context window | 200,000 tokens (best) | 200,000 tokens (best) | 32,768 tokens |
| Max output | 100,000 tokens (best) | 32,000 tokens | 4,096 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | No |
| PDFs | Yes | Yes | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | Yeslow · medium · high | Yes | No |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Proprietary |
| API model ID | o1 | — | solar-mini |
| API providers | 9 (best) | 5 | 1 |
| Released | Dec 5, 2024 | May 22, 2025 | Jun 12, 2024 |
| Knowledge cutoff | Sep 2023 | Mar 31, 2025 | Sep 2024 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- o1$270.00
- Claude Opus 4$300.00
- solar-mini$1.80
Which should you choose?
Which is better: o1, Claude Opus 4 or solar-mini?
solar-mini is the better all-round choice, scoring 52/100 against o1 (30) and Claude Opus 4 (27). It leads on price. o1 wins on inputs & features. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, o1, Claude Opus 4 or solar-mini?
solar-mini is cheaper at $0.15 input / $0.15 output per million tokens (official Upstage API price). o1 costs $15.00 input / $60.00 output per million tokens (official OpenAI API price); Claude Opus 4 costs $15.00 input / $75.00 output per million tokens (median across 5 API providers). At a typical mix of three input tokens to one output token, that is $0.15 per million tokens for solar-mini versus $26.25 for o1 (175× as much) and $30.00 for Claude Opus 4 (200× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. o1 has an ECI of 141.9, Claude Opus 4 has an ECI of 142.7 and solar-mini has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for o1 and solar-mini yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
o1 and Claude Opus 4 have the largest context windows (200,000 and 200,000 tokens), against 32,768 for solar-mini. Maximum output per response: o1 up to 100,000, Claude Opus 4 up to 32,000, solar-mini up to 4,096 tokens.
Which can read images, PDFs, audio or video?
o1 accepts text, images and PDFs; Claude Opus 4 accepts text, images and PDFs; solar-mini accepts text. o1 handles the widest range of inputs.
Are any of these open source?
No. o1, Claude Opus 4 and solar-mini are proprietary and only available through APIs and apps.
Which is newer?
Claude Opus 4 is the newest, released May 22, 2025. o1 came out Dec 5, 2024; solar-mini came out Jun 12, 2024. Knowledge cutoff: o1 Sep 2023, Claude Opus 4 Mar 31, 2025, solar-mini Sep 2024.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
