Palmyra X5 vs GPT OSS 120B
GPT OSS 120B comes out ahead, 57 to 48 on our weighted score, and it is the cheaper option too.
Writer
Palmyra X5
48/100- ECI—
- Price$0.60 / $6.00
- Context1M
- Our pick
OpenAIGPT OSS 120B
57/100- ECI140.0
- Price$0.15 / $0.60
- Context131K
Add a model
Make it a three-way comparison.
GPT OSS 120B is our pick
GPT OSS 120B is the better all-round choice, scoring 57/100 against Palmyra X5 (48). It leads on price. Palmyra X5 wins on inputs & features and context window. 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 priceGPT OSS 120BGPT OSS 120B $0.263 · Palmyra X5 $1.95 per 1M tokens (3:1 blend)
- Longest contextPalmyra X5Palmyra X5 1,000,000 · GPT OSS 120B 131,072 tokens
- Widest inputsPalmyra X5Palmyra X5: Text, Images · GPT OSS 120B: Text
- Self-hostingGPT OSS 120BPublishes downloadable weights
| Measure | Weight | Palmyra X5 | GPT OSS 120B |
|---|---|---|---|
| Price | 50% | 36 | 77 |
| Inputs & features | 30% | 60 | 45 |
| Context window | 20% | 60 | 24 |
| Overall | 100% | 48/100 | 57/100 |
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 | Palmyra X5Writer | GPT OSS 120BOpenAI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | 140.0 |
| ECI rank | — | #99 of 148 |
| GPQA DiamondGraduate-level science questions | — | 75.8% |
| OTIS Mock AIME 2024–2025Competition mathematics | — | 88.9% |
| Price per million tokens | ||
| Input | $0.60 | $0.15 (best) |
| Output | $6.00 | $0.60 (best) |
| Cached input | — | — |
| Blended (3:1) | $1.95 | $0.263 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 1 providers | Median of 36 providers |
| Limits | ||
| Context window | 1,000,000 tokens (best) | 131,072 tokens |
| Max output | 8,192 tokens | 32,768 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Proprietary | Open |
| API model ID | — | — |
| API providers | 1 | 39 (best) |
| Released | Apr 28, 2025 | Aug 5, 2025 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Palmyra X5$18.00
- GPT OSS 120B$2.70
Which should you choose?
Which is better: Palmyra X5 or GPT OSS 120B?
GPT OSS 120B is the better all-round choice, scoring 57/100 against Palmyra X5 (48). It leads on price. Palmyra X5 wins on inputs & features and context window. 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, Palmyra X5 or GPT OSS 120B?
GPT OSS 120B is cheaper at $0.15 input / $0.60 output per million tokens (median across 36 API providers). Palmyra X5 costs $0.60 input / $6.00 output per million tokens (median across 1 API provider). At a typical mix of three input tokens to one output token, that is $0.263 per million tokens for GPT OSS 120B versus $1.95 for Palmyra X5 (7.4× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Palmyra X5 has not been scored yet and GPT OSS 120B has an ECI of 140.0.
Which is better for coding?
There are no published SWE-bench Verified results for Palmyra X5 and GPT OSS 120B yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Palmyra X5 has the largest context window at 1,000,000 tokens, against 131,072 for GPT OSS 120B. Maximum output per response: Palmyra X5 up to 8,192, GPT OSS 120B up to 32,768 tokens.
Which can read images, PDFs, audio or video?
Palmyra X5 accepts text and images; GPT OSS 120B accepts text. Palmyra X5 handles the widest range of inputs.
Are any of these open source?
GPT OSS 120B publishes its weights and can be self-hosted; Palmyra X5 is proprietary.
Which is newer?
GPT OSS 120B is the newest, released Aug 5, 2025. Palmyra X5 came out Apr 28, 2025.
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.
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