Ember-1 vs GPT-6 Astra Pro
Ember-1 costs 3.3x less per output token than GPT-6 Astra Pro ($15.00 vs $50.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- 52.6
- Overall
- No data
- Output $/M
- $15.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $50.00
Ember-1 or GPT-6 Astra Pro: which to pick
Only Ember-1 has a coding score, 52.6 on the Vibe Coding Index; GPT-6 Astra Pro has none, so the two cannot be ranked on coding.
Pick GPT-6 Astra Pro for a larger context window (1.05M against 1.05M tokens).
No benchmark has tested both yet. Ember-1 has results on Terminal-Bench 4 (Vals AI), Vibe Code Bench (Vals AI) and Code migration (Vals AI); GPT-6 Astra Pro on WeirdML and Chess puzzles. 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
Only Ember-1 has a coding score, so no call is made.
One side not measured
Long documents
Listed context window
GPT-6 Astra Pro
GPT-6 Astra Pro takes 1.05M tokens against 1.05M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Ember-1
Ember-1 $0.011, GPT-6 Astra Pro $0.035 per turn.
List prices
At a glance
- Coding index
- Ember-1 52.6 from 2 benchmarks, GPT-6 Astra Pro 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
- Ember-1 $15.00 against GPT-6 Astra Pro $50.00 per million output tokens, 3.3x apart.
- Context window
- Ember-1 takes 1.05M tokens, GPT-6 Astra Pro 1.05M.
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 Index6 boards measured
| Benchmark | Ember-1 | GPT-6 Astra Pro | Leader |
|---|---|---|---|
| Terminal-Bench 4 (Vals AI) | 20.7% | Not measured | Only Ember-1 measured |
| Vibe Code Bench (Vals AI) | 83.9% | Not measured | Only Ember-1 measured |
| Code migration (Vals AI) | 32.5% | Not measured | Only Ember-1 measured |
| IOI (Vals AI) | 46.3% | Not measured | Only Ember-1 measured |
| CyberBench (Vals AI) | 69.5% | Not measured | Only Ember-1 measured |
| WeirdML | Not measured | 93.6% | Only GPT-6 Astra Pro measured |
| Neither model has a result on the other 33 boards here | |||
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index7 boards measured
| Benchmark | Ember-1 | GPT-6 Astra Pro | Leader |
|---|---|---|---|
| Finance Agent (Vals AI) | 51.8% | Not measured | Only Ember-1 measured |
| Tax Agent Bench (Vals AI) | 31.1% | Not measured | Only Ember-1 measured |
| Legal Research Bench (Vals AI) | 44.7% | Not measured | Only Ember-1 measured |
| Excel Modeling Benchmark (Vals AI) | 63.4% | Not measured | Only Ember-1 measured |
| BioMysteryBench (Vals AI) | 67.0% | Not measured | Only Ember-1 measured |
| Terminal-Bench-Science (Vals AI) | 5.7% | Not measured | Only Ember-1 measured |
| Vals Science Index | 31.8% | Not measured | Only Ember-1 measured |
| Neither model has a result on the other 34 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Ember-1 | GPT-6 Astra Pro | Leader |
|---|---|---|---|
| MysteryMechanism (Vals AI) | 22.5% | Not measured | Only Ember-1 measured |
| Chess puzzles | Not measured | 76.0% | Only GPT-6 Astra Pro measured |
| Neither model has a result on the other 20 boards here | |||
GeneralDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Ember-1 | GPT-6 Astra Pro | Leader |
|---|---|---|---|
| Public Benefits Bench (Vals AI) | 66.2% | Not measured | Only Ember-1 measured |
| Neither model has a result on the other 45 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
Ember-1 costs less
Repository review
50K input + 3K output tokens
Ember-1 costs less
Agent loop
200K input + 10K output tokens
Ember-1 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 | Fireworks Ember-1 | OpenAI GPT-6 Astra Pro |
|---|---|---|
| Maker | Fireworks | OpenAI |
| Weights | No public weights listed | No public weights listed |
| Released | September 24, 2026 | September 4, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $3.00 | $10.00 |
| Output $/Mtok | $15.00 | $50.00 |
| Coding index | 52.6 | Not benchmarked |
| Independent measurements behind it | 2 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Ember-1 better than GPT-6 Astra Pro for coding?
Only Ember-1 has a coding score, 52.6 on the Vibe Coding Index; GPT-6 Astra Pro has none, so the two cannot be ranked on coding. Pick GPT-6 Astra Pro for a larger context window (1.05M against 1.05M tokens).
Which is cheaper, Ember-1 or GPT-6 Astra Pro?
Ember-1 costs $3.00 per million input tokens and $15.00 per million output tokens; GPT-6 Astra Pro costs $10.00 and $50.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Ember-1 or GPT-6 Astra Pro?
GPT-6 Astra Pro, with 1.05M tokens against 1.05M.
Has any benchmark tested both Ember-1 and GPT-6 Astra Pro?
No benchmark has tested both yet. Ember-1 has results on Terminal-Bench 4 (Vals AI), Vibe Code Bench (Vals AI) and Code migration (Vals AI); GPT-6 Astra Pro on WeirdML and Chess puzzles. Compare them on price and context instead. Data as of October 22, 2026.