GPT-5 Image vs MythoMax 13B
MythoMax 13B costs 25.0x less per output token than GPT-5 Image ($0.40 vs $10.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $10.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.40
GPT-5 Image or MythoMax 13B: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick GPT-5 Image for a larger context window (400K against 8K tokens).
No benchmark has tested both yet. GPT-5 Image has results on Design Arena: images, Design Arena: graphic design and Design Arena: logos; MythoMax 13B has none yet. 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
Image generation
Design Arena: images
No call
Only GPT-5 Image has a Design Arena: images result, 1191.
Directional only
Long documents
Listed context window
GPT-5 Image
GPT-5 Image takes 400K tokens against 8K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MythoMax 13B
GPT-5 Image $0.015, MythoMax 13B $0.0006 per turn.
List prices
At a glance
- Coding index
- GPT-5 Image not benchmarked, MythoMax 13B 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
- GPT-5 Image $10.00 against MythoMax 13B $0.40 per million output tokens, 25.0x apart.
- Context window
- GPT-5 Image takes 400K tokens, MythoMax 13B 8K.
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.
Image generationDirectional onlyPublic boards, shown as published, kept out of the index3 boards measured
| Benchmark | GPT-5 Image | MythoMax 13B | Leader |
|---|---|---|---|
| Design Arena: images | 1191 | Not measured | Only GPT-5 Image measured |
| Design Arena: graphic design | 1172 | Not measured | Only GPT-5 Image measured |
| Design Arena: logos | 1202 | Not measured | Only GPT-5 Image measured |
| Neither model has a result on the other 2 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
MythoMax 13B costs less
Repository review
50K input + 3K output tokens
MythoMax 13B costs less
Agent loop
200K input + 10K output tokens
MythoMax 13B 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 | OpenAI GPT-5 Image | MythoMax 13B |
|---|---|---|
| Maker | OpenAI | Gryphe |
| Weights | No public weights listed | Open weights |
| Released | October 14, 2025 | July 2, 2023 |
| Context window | 400K | 8K |
| Input $/Mtok | $10.00 | $0.35 |
| Output $/Mtok | $10.00 | $0.40 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is GPT-5 Image better than MythoMax 13B for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GPT-5 Image for a larger context window (400K against 8K tokens).
Which is cheaper, GPT-5 Image or MythoMax 13B?
GPT-5 Image costs $10.00 per million input tokens and $10.00 per million output tokens; MythoMax 13B costs $0.35 and $0.40. Cost per solved task is known for neither of them.
Which has the bigger context window, GPT-5 Image or MythoMax 13B?
GPT-5 Image, with 400K tokens against 8K.
Has any benchmark tested both GPT-5 Image and MythoMax 13B?
No benchmark has tested both yet. GPT-5 Image has results on Design Arena: images, Design Arena: graphic design and Design Arena: logos; MythoMax 13B has none yet. Compare them on price and context instead. Data as of October 22, 2026.